MENSURATION MCQ SET 4
1. The minute hand of a clock is 20cm long . Find the area on the face of the clock swept by the minute hand between 8 am and 8:45 am.
(a) 6600/7 cm^2
(b) 6600/9 cm^2
(c) 6600/14 cm^2
(d) 6600/18 cm^2
Answer: A
2. An equilateral triangle circumscribes all the circles , each with radius 10 cm . What is the perimeter of the equilateral triangle ?
(a) 20 (2 + โ3) cm
(b) 30 (2 + โ3) cm
(c) 60 (2 + โ3) cm
(d) None of these
Answer: C
3. Three circles of radius cm are kept touching each other . The string is tightly tied around these three circles . What is the length of the string ?
(a) 42 + 7 ฯ cm
(b) 21 + 14 ฯ cm
(c) 42 + 14 ฯ cm
(d) 7 + 14 ฯ cm
Answer: C
4. In a quadrilateral ABCD , AC = 12 cm . If length of the perpendiculars drawn from B and D to line AC are 5 cm and 7 cm , the area of the quadrilateral ABCD is :
(a) 60 cm^2
(b) 72 cm^2
(c) 144 cm^2
(d) 90 cm^2
Answer: B
5. Find the area of the quadrilateral formed by joining the mid points of the sides of the quadrilateral of area 160 cm^2 .
(a) 60 cm^2
(b) 80 cm^2
(c) 72 cm^2
(d) 100 cm^2
Answer: B
6. Two sides of a plot measuring 32m and 24m and the angle between them is a perfect right angle . The other two sides measure 25m each and the other three angles are not right angles . The area of the plot in m^2 is :-
(a) 786
(b) 534
(c) 696.5
(d) 684
Answer: D
7. Find the area of a circle whose radius is equal to the side of a square whose perimeter is 196 m .
(a) 7457 m^2
(b) 7546 m^2
(c) 6477 m^2
(d) 8844 m^2
ย Answer: B
8. If radius of all the circles is 14 cm , find the area of the shaded region
(a) 168 cm^2
(b) 616 cm^2
(c) 156 cm^2
(d) 256 cm^2
Answer: A
9. An equilateral triangle is made on the diagonal of a square . Then find the ratio of their areas .
(a) โ3 : 2
(b) โ2 : โ3
(c) 2 : โ3
(d) 1 : โ2
Answer: A
10. The sum of the square of the sides of a rhombus is 1600 cm^2 . What is the side of the rhombus ?
(a) 25 cm
(b) 15 cm
(c) 20 cm
(d) 10 cm
Answer: C
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