Question

Estimate the length of the radius, if the area of the circle is 750 mm. sq.
A)19.78
B)23.87
C)9.36
D)15.45

Answer 1

D)15.45

Answer 2

HOW DID YOU GET THAT ?

Answer 3

USE
AREA OF CIRCLE=\[piR ^{2}\]
WHERE r IS THE RADIUS

Answer 4

ok ?

Answer 5

Thank You goformit100 (:

Answer 6

area = r^2*pi so than 750 =r^2 *pi
us for pi =3,14 so than 750=r^2 * 3,14
r^2 =750/(3,14) =238,8
r=sqrt(238,8) = 15,45