manastasie637 manastasie637

21-05-2020
Mathematics

contestada

A circle has an area of 64 cm²
Work out the radius of the circle.
(2marks)

Respuesta :

jetsteamunk jetsteamunk

21-05-2020

Answer: 4.51 cm

Step-by-step explanation:o Area of circle=pi×r^2

Given area=64 cm sq.

so, 64=3.14×r^2

64/3.14= r^2

20.38= r^2

√20.38=r

4.51=r

Therefore, radius= 4.51 cm

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