Question

The circumference of a circle exceeds the diamater diameter by 16.8cm find the circumference

Answer 1

Answer:

Circumference =  24.61 cm

Step-by-step explanation:

let r be the radius of the given circle.

so, d = 2r is the diameter.

Now, Circumference = diameter + 16.8 cm

or C = 2r + 16.8 cm

Also, C = 2πr

So, 2πr  = 2r + 16.8 cm

putting π  = 3.14, we get

2 x 3.14 x r = 2r + 16.8cm

or, 6.28r  - 2r = 16.8

So, (6.28 - 2) r = 16.8

Simplifying further, we get r =  16.8/ 4.28 = 3.92 cm

Now, C = 2πr =  2 x 3.14 x 3.92 =  24.61 cm