Question

The circle shown has a radius of 4 cm.
What is the area of the circle to 1 decimal place?

Answer 1

50.3 cm^2 to 1 dec. place.

Explanation:

Area = pi r^2

= pi * 4^2

= 16 * pi

= 50.265

Answer 2

A = 50.2 cm^2

Explanation:

The area of a circle is given by

A = pi r^2 where r is the radius

A = (3.14) * 4^2

A =50.24

To 1 decimal place

A = 50.2 cm^2