Question

Estimate the length of the radius, if the area of a circle is 750 mm2.
A. 19.78 mm
B. 23.87 mm
C. 9.36 mm
D. 15.45 mm

Answer 1

use the formula
\(\Large A = \pi r^2\)

here A = 750
find r

Answer 2

would R be 375

Answer 3

no...
750 = pi r^2

start by dividing by pi on both sides , what u get ?

Answer 4

what is the radius

Answer 5

that you need to find
by isolating the r

Answer 6

r^2 = 750/pi

take square root on both sides

Answer 7

ohh so would the anwser be 19.78

Answer 8

no..how u got that ?

Answer 9

750/pi is 238.73

Answer 10

and its square root is ?

Answer 11

ohh 15.45

Answer 12

yes :)