Question

using the formula d = r c=2nr or c=nd find the values of unknown variables d=14cm c ? r=35cm c? ​

Answer 1

Answer:

We know,

D = R $\mathcal\red{or}$ C= 2πR $\mathcal\red{or}$ C = πD

Then,

1.

D = 14cm

so, C = π×D

=$\frac{22}{7}\times 14cm$

=$22\times 14cm$

==$\blue{308cm}$

2.

R = 35 cm

so, C = 2πR

=$2\times\frac{22}{7}\times 35cm$

=$2\times22\times 5cm$

=$\blue{220cm}$