Practice the AP 7th Class Maths Bits with Answers 11th Lesson Area of Plane Figures on a regular basis so that you can attempt exams with utmost confidence.

## AP Board 7th Class Maths Bits 11th Lesson Area of Plane Figures

Multiple Choice Questions :

Question 1.

Area of a rectangle ___________

(A) l × b

(B) l × b × h

(C) 2(l + b)

(D) l + b

Answer:

(A) l × b

Question 2.

The perimeter of a square =

(A) 6 s

(B) 4 s

(C) s × s

(D) 4 . s × s

Answer:

(B) 4 s

Question 3.

Perimeter of the triangle whose sides are a, b, c is ___________

(A) \(\frac{1}{2}\) × b × c

(B) \(\frac{1}{2}\) × b ×h

(C) a + b + c

(D) a × b × c

Answer:

(C) a + b + c

Question 4.

Perimeter of a circle = ___________

(A) 2πr

(B) πd

(C) πr^{2}

(D) A & B

Answer:

(D) A & B

Question 5.

Area of a right-angled isosceles triangle ___________

(A) Area of rectangle

(B) Area of square

(C) Area of right triangle

(D) None

Answer:

(B) Area of square

Question 6.

The value of π = ___________

(A) 3.1417

(B) 3.2416

(C) 3.1416

(D) 3.2417

Answer:

(C) 3.1416

Question 7.

Area of a circular path = ___________

(A) π(R + r) (R – r)

(B) π(R + w) (R – w)

(C) π(2R + 2r)

(D) None

Answer:

(A) π(R + r) (R – r)

Question 8.

Area of a right angled triangle =

(A) \(\frac{1}{2}\) × b × h

(B) \(\frac{1}{2}\) × l × b

(C) \(\frac{1}{2}\) × a × b

(D) \(\frac{1}{2}\) × a × r

Answer:

(C) \(\frac{1}{2}\) × a × b

Question 9.

Base and height of a triangle are 10 cm and 5 cm, its area is ___________

(A) 25 cm^{2}

(B) 50 cm^{2}

(C) 100 cm^{2}

(D) 30 cm^{2}

Answer:

(A) 25 cm^{2}

Question 10.

If the side of a square is 7 cm, then its perimeter is cm.

(A) 14

(B) 21

(C) 28

(D) 35

Answer:

(C) 28

Question 11.

If the area of a rectangle is 180 sq.cm, its length is 20 cm, then its breadth is ___________ cm.

(A) 8

(B) 7

(C) 10

(D)9

Answer:

(D)9

Question 12.

If the circumference of a circle is 55 cm, then its diameter is ___________ cm.

(A) 17.5

(B) 18

(C) 17

(D) 16.5

Answer:

(A) 17.5

Question 13.

The area of the shaded path is ___________

(A) Area of inner square – area of outer square

(B) Area of outer square – area of inner square

(C) Area of outer square + area of inner square

(D) None

Answer:

(B) Area of outer square – area of inner square

Question 14.

Length and breadth of a rectangle is 18 cm and 8 cm. If the area of the rectangle equals to the area of a square, then the side of the square is ___________

(A) 8 cm

(B) 12 cm

(C) 16 cm

(D) 18 cm

Answer:

(B) 12 cm

Question 15.

The length of a rectangle is twice of its breadth, the perimeter is 24 cm, then the length and breadth are ___________

(A) 8 cm, 4 cm

(B) 4 cm, 8 cm

(C) 4 cm, 4 cm

(D) None

Answer:

(A) 8 cm, 4 cm

Question 16.

Area of the shaded path in the given figure is ___________

Answer:

Question 17.

The perimeter of the floor of a room is x and its length is y, then its area is ___________

(A) 2xy

(B) xy

(C) 2x + y

(D) y(\(\frac{x}{2}\) – y)

Answer:

(D) y(\(\frac{x}{2}\) – y)

Question 18.

The circumference of a circle is C. Its area is ___________

(A) \(\frac{4 \pi}{\mathrm{C}}\)

(B) \(\frac{C^{2}}{4 \pi}\)

(C) 2πC^{2}

(D) 4πC^{2}

Answer:

(B) \(\frac{C^{2}}{4 \pi}\)

Question 19.

The radii of outer and inner circle are 4 cm and 3 cm. Area of the ring is ___________ sq.cm.

(A) 21

(B) 44

(C) 12

(D) 22

Answer:

(D) 22

Question 20.

The perimeter of a square is 16a. Area of the square is ___________

(A) 4a^{2}

(B) 8a^{2}

(C) 256 a^{2}

(D) 16 a^{2}

Answer:

(D) 16 a^{2}

Fill in the blanks:

Question 1.

Perimeter of a rectangle is ______

Answer:

2(l + b)

Question 2.

Area of a square is ______

Answer:

s × s

Question 3.

Area of a triangle is ______

Answer:

\(\frac{1}{2}\) × b × h

Question 4.

Circumference of a circle is ______

Answer:

2πr (or) πd

Question 5.

Area of a triangle = \(\frac{1}{2}\) × ______

Answer:

Area of the rectangle

Question 6.

The Indian mathematician who calculated V value is ______

Answer:

Aryabhatta

Question 7.

Area of a circle is ______

Answer:

πr^{2} (or) \(\frac{\pi \mathrm{d}^{2}}{4}\)

Question 8.

Area of a square path = ______

Answer:

Area of outer square

Question 9.

Area of the rectangular path = ______

Answer:

Question 10.

The side of a square is 18 cm, then its area is ______

Answer:

324

Question 11.

The length and breadth of a rectangle are 25 cm and 20 lcm., then its perimeter is ______cm.

Answer:

90

Question 12.

In the figure BE = ______

Answer:

3 cm

Question 13.

The radius of a circle is 7 cm, then its circumference is ______

Answer:

44 cm

Question 14.

If the circumference is 22 cm, then the radius of the circle is ______

Answer:

3.5 cm

Question 15.

If the perimeter of a square is 36 cm, then its area is ______

Answer:

81 sq.cm

Question 16.

If l = 15 cm, b = 12 cm, then the perimeter of the rectangle is ______

Answer:

54

Question 17.

If the height of a triangle is 5 cm and its area is 40 sq.cm., then its base ______

Answer:

16 cm

Question 18.

The base of a triangle is 40cm ad its area is 220 cm^{2}, then its height is ______ cms.

Answer:

11

Question 19.

The ratio of circumference of a circle is to its diameter is___________ .

Answer:

π units

Question 20.

The area of a circle whose radius is7 cm is _____________ sq.cm.

Answer:

154

Match the following :

Question 1.

Group A | Group B |

1. Area of the triangle = ______ | (A) 2πr |

2. Area of the square = ______ | (B) πr^{2} |

3. Area of the rectangle = _____ | (C) lb |

4. Area of the circle = _______ | (D) s s |

5. Circumference of the circle = _____ | (E) \(\frac{1}{2}\).b.h |

Answer:

Group A | Group B |

1. Area of the triangle = ______ | (E) \(\frac{1}{2}\).b.h |

2. Area of the square = ______ | (D) s s |

3. Area of the rectangle = _____ | (C) lb |

4. Area of the circle = _______ | (B) πr^{2} |

5. Circumference of the circle = _____ | (A) 2πr |

Question 2.

Group A | Group B |

1. Perimeter of the triangle = _____ | (A) π(R^{2} – r^{2}) |

2. Perimeter of rectangle = ______ | (B) Area of outer rectangle – Area of inner rectangle |

3. Perimeter of square = _______ | (C) (a + b + c) |

4. Path area of a rectangle = _____ | (D) 4 s |

5. Path area of a square = _____ | (E) 2(l + b) |

6. Area of Ring = _______ | (F) Area of outer square – Area of inner square |

Answer:

Group A | Group B |

1. Perimeter of the triangle = _____ | (C) (a + b + c) |

2. Perimeter of rectangle = ______ | (E) 2(l + b) |

3. Perimeter of square = _______ | (D) 4 s |

4. Path area of a rectangle = _____ | (B) Area of outer rectangle – Area of inner rectangle |

5. Path area of a square = _____ | (F) Area of outer square – Area of inner square |

6. Area of Ring = _______ | (A) π(R^{2} – r^{2}) |