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Answer:
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Step-by-step explanation:
Answer:
The diameter of the semicircle is 10 feet.
Step-by-step explanation:
This is because d=r2 or diameter=radius*2
Answer:
40/3 cm
Step-by-step explanation:
FE : DC
1 : 3
Since area ABCD = 400
s² = 400
s = 20
FE = ⅓(20) = 20/3 cm
AM = DC - FE
AM = 20 - 20/3 = 40/3
Multiply 3 and n, and 3 and 4.
3n+12
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hope it helps