Angle b is a supplement of angle a and measure angle a = 65.2 degrees. find measure angle b
1 answer:
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Answer:
radius = 5 in
Step-by-step explanation:
Using the formula for calculating the area (A) of a circle
A = πr² ( r is the radius )
here A = 78.5, hence
3.14r² = 78.5 ( divide both sides by 3.14 )
r² = = 25 ( take the square root of both sides )
r = = 5
Answer:
Algebraic expression ;
Step-by-step explanation:
4 is subtracted from r means the same as r decreased by 4
Subtracted = -