The surface area of a cylinder is given by the formula SA = 2r2 + 2rh.

A cylinder has a radius of 15 cm and a surface area of 1,620 cm2 .

Find the height of the cylinder

according to the triangle sum theorem, all the angles in a triangle must add up to 180 degrees. if we know one angle is already 90, we do 180-90=90. the other 2 angles must add up to 90, exactly.

step-by-step explanation:

answer: 80,000

step-by-step explanation:

the population doubles every day.

10,000*2=20,000 day 4

20,000*2=40,000 day 5

40,000*2=80,000 day 6