3 years ago

PLEASE HELP!! 10 POINTS

Mathematics

1 answer:

kenny6666 [7]3 years ago

3 0

Check the picture below.

we know B is the midpoint of AC, and we know ED is 4 units, since AD is a total of 8, then AE must also be 4 units, meaning point E is the midpoint of AD.

since E is the midpoint of AD and B is the midpoint of AC, then EB is the midsegment of the triangle, and is parallel to the base DC.

∡ABE = 60°

∡AEB = 90°

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dedylja [7]

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3 years ago

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Sati [7]

Answer:

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Step-by-step explanation:

The formula for the volume of a sphere is $\frac{4}{3}\\$ π $r^{3}$ . So, just plug the radius into the formula. $r^{3}$ <em> </em>in this case is $9^{3}$ which is 729. For, $\frac{4}{3}$ ×729, the 3 and 729 cancel out to create 4×243 which is 972. Just add π to this and you get 972π. If π is 3.14 just multiple 972 and 3.14 to get 3052.08.