Question

if a radius of the sphere is 1/2 . then what is the decrease in its surface area?

Answer 1

Answer:

helping hand!!!!!your answer is 75 percent

Step-by-step explanation:

radius=r

surface area=4pier^2

radius is=1/2

so, surface area=4pie(r/2)^2

decrease in surface area=4pier^2-1pier^2=3pier^2

percentage=3pier^2/4pier^2×100

=75percentage