Question

Find the diameter of a circle if its circumference is 17.27 cm. Use 3.14 as pi. Give the answer with a decimal after the point.

please

Answer 1

Answer:

We know that circumference = 2πr

where r is the radius.

Further, we know that 2r = d (diameter)

and 2πr can be written as 2r × π

=> d × π

= πd

Hence, 2πr = πd

So circumference = πd

Given, circumference = 1256 cm

π = 3.14

=> 3.14 × d = 1256

=> d = 400 cm

Hence, diameter of the circle = 400 cm.