Question

10
(a) 141 cm
(b) 71 cm
(c) 7 cm
(d) 14 c
5. If the ratio of radii of two circles is 2:5, the ratio of their circumference
(a) 5:2
(6) 4:5
(c) 3:5
(d) 2:5
6. In the Fig., sides of a square are surrounded by four same semicircles
each of radius 10.5 cm. The perimeter of the region so formed is
(a) 132 cm
(6) 88 cm
(c) 120 cm
(d) 288 cm
7. In the Fig., an equilateral triangle-shaped
wire is rebent to form a circular ring.
The radius of the ring so formed is
(a) 3.6 cm
(6) 6.3 cm
(c) 5.2 cm
(d) 5.6 cm
C
3
13.2 cm
8. One side of a parallelogram is 16 cm and the distance of this side fro
side is 7.5 cm. The area of the parallelogram is
(a) 100 cm2
(6) 72 cm2
(c) 60 cm2
(d) 12
9. The difference between the circumference and radius of a circle is 37​

Answer 1

Answer:

5) 2:5

Step-by-step explanation: