15x + 9 is the answer
7x - 4 + 8x + 5
add 4
7x + 8x + 9
7x + 8x is 15x
The answer will come out to
15x + 9
Answer:
V =πr^3
Step-by-step explanation:
The height of the pyramid is 3 times the radius of the cone. So we can express height of the pyramid as a function of radius of the cone.
Let's take radius of cone = r
So, the height of the pyramid = 3r
Area of the base of the cone = πr^2 = area of the pyramid.
If the base dimensions of the pyramid are l and b, then area of the pyramid, l x b = π r^2.
The volume of the pyramid = 1/3 x l x b x h
We know, l x b =π r^2 and h = 3r.
Thus, volume of pyramid is = 1/3 x π x r^2 x 3 r
= π r^3.
Thank you.
Answer:
C.9.8 cm
Step-by-step explanation:
divide 7.3 divided by 71.54
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