Question

1. Find the diameter of the circle whose circumference
(i) 11 cm
(ii) 66 cm
(iii) 74 cm
(iv) 132 cm
2. Find the area of the circle whose diameter is:
(i) 14 cm
(ii) 56 cm
(iii) 63 dm
(iv) 84 dm​

Answer 1

Answer:

C = 11 then d= 3.5

C =66 then d = 21.01

C = 74 then d = 23.55

C =132 then d = 42.02

Answer 2

Answer:

1.i.let the radius be r

Therefore,

2πr=Circumference

=>2×(22/7)×r=11

=>r=(11×7)/(22×2)

=>r=1.75 cm

diameter=1.75×2

=3.5cm

2.i. Diameter=14cm

Radius=14/2

=7cm

Area=πr²

=(22/7)×7×7

=154cm²

Rest do by yourself...

Hope it is clear...

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