How much glass is needed to build a greenhouse with an area of 15 feet by 20 feet and a height of 12 feet? (Remember, you don't need glass for the floor!) Explain how you got your answer by sketching a picture and explaining your math.

hello from mrbilldoesmath!

answer:   x^2 + y^2 = 1024

discussion:

the equation of a circle with center (h,k) and radius "r" is

(x-h)^2 + (y-k)^2 = r^2.

in our case

(x-0)^2 + (y-0) ^2 = 32^2 = 1024

you,

mrb

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10 dorme

step-by-step explanation: