Question

10. Peter bought a ball with a radius of 25 cm. What is the surface area of the ball?
A. 6,850 cm2
B. 7,850 cm2
C. 8,850 cm2
D. 9,750 cm2​

Answer 1

radius = 25cm

surface area of a spehere = 4$\pi$r²

= 4 x 3.14 x 25²

=4 x 3.14 x 625

= 12.56 x 625

= 7850 cm²

 

hope I helped :))