If r is the radius of a sphere its surface area = 4(pi)r^2.
If the radius is doubled then its surface area = 4(pi)(2r)^2 = 4*4(pi)r^2.
So the surface area becomes 4-fold or the increase in surface area is 300%.
Answer:
8:7 or 8/7
Step-by-step explanation:
you put the object before to as the numerator and the one after to as the denominator or to the right of the :
It's saying that both of the shapes are equal to each other. It wants you to compare them so it would be like AB = SR and such
Answer:
I believe it is 21
Step-by-step explanation: