Question

If the surface area of sphere is 100 pi cm² then its radius is equal to _____ a)25cm b)100cm c)5cm d) 10cm​

Answer 1

d) 10 cm

......................

Answer 2

Answer:

surface area of a sphere is 4 π r^2 sq cm

here r is the radius of the given sphere

so,

4πr^2=100π

=> 4r^2=100

=> r^2=100 /4=25

=> r=√25=5

radius of the given sphere is 5 cm