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Answer :

Step-by-step explanation:

the volume of a cylinder (as for any other regular shape that had the same top area as base area) is

base area × height

the base area of a cylinder is a circle, so the area is

pi×r²

with r being the radius (remember, the radius is half of the diameter). in our case therefore 7/2 = 3.5 yd

so, we get for the volume here

pi×3.5² × 12 = pi×12.25 × 12 = 147×pi yd³

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