Question

The circumference of a circular mirror is 31.4 cm. What is the area of the circular mirror in square centimeters? Use pi = 3.14 .

Answer 1

Answer : AREA OF A CIRCLE = PIR2 ( PI ×R ×R )

N.B = R MEANS RADIUS.

GIVEN THE CIRCUMFERENCE, WE WILL USE THE CIRCUMFERENCE TO FIND THE RADIUS.

FORMULA FOR FINDING RADIUS = CIRCUMFERENCE ÷ 2 × 3.142.

SO THAT IS : 31.4 ÷ 6.284 = 4.9.

ROUND UP : 5.

SO THE RADIUS IS 5. NOW WE CAN FINDING THE AREA. 3.14×5×5 = 78.5 . Say thanks Nique.