What is the percent decrease from 8.6 to 7.9
2 answers:
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Answer:
The answer is <u>8</u>.
Step-by-step explanation:
Given:
4d - 35= -3.
Now, the solution:
Adding both sides by 35 we get:
Dividing both sides by 4 we get:
Therefore, the answer is 8.
the solid is made up of 2 regular octagons, 8 sides, joined up by 8 rectangles, one on each side towards the other octagonal face.
from the figure, we can see that the apothem is 5 for the octagons, and since each side is 3 cm long, the perimeter of one octagon is 3*8 = 24.
the standing up sides are simply rectangles of 8x3.
if we can just get the area of all those ten figures, and sum them up, that'd be the area of the solid.