What is the exact area of a circular courtyard with a radius of 22 ft?

a.

1936π ft²

b.

484π ft²

c.

44π ft²

d.

22π ft²

To keep cylindrical tanks from tipping over, a designer is planning to enlarge the original area of the base by 50%. the new tank should have the same volume as the original. how should the designer change the height of the tank? a: make it 50% taller than the height of the original tank. b: make it 6623% taller than the height of the original tank c: make it 3313% shorter than the height of the original tank d: make it 50% shorter than the height of the original tank.