Question

need full steps and write answer of c and d
please help

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Answer 1

Step-by-step explanation:

Radius Diameter Area

(C) 6.20704 12.41409 121.0373

(D) 5.01338 10.02676 18.9607

Sry dear I forgot the formula..

But this answers are right coz I hv checked the answers in Circumference Calculator.

Hope u understand.. ✅️✅️✌️

Answer 2

Answer:

c) r = 6.20 cm

d = 12.4 cm

d) r = 5.01 cm

d = 10.02 cm

Step-by-step explanation:

c)

Circumference = 2πr

39 = 2 × 22/7 × r

r = 39 × 7 / 2 × 22

r = 6.20

Diameter = 2r

d = 2 × 6.20 = 12.4

d)

Circumference = 2πr

31.5 = 2 × 22/7 × r

r = 31.5 × 7 / 2 × 22

r = 5.01

Diameter = 2r

d = 2 × 5.01 = 10.02

Hope it helps you:)