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patriot [66]
3 years ago
8

Find the area of the semicircle please .

Mathematics
2 answers:
Bond [772]3 years ago
8 0

Answer:

12.5π or 39.25

Step-by-step explanation:

10 is diameter, we first find the radius which is 10/2 = 5 and so we know the area formula of the circle is πr^2 so 5^2 is 25 and then there's a π at the end so 25π, but it's a semicircle so 25π/2 which is 12.5π, if it's in base 10 (decimal form) then simply do 12.5 x 3.14 = 39.25

NeX [460]3 years ago
3 0

Answer:

39.25

Step-by-step explanation:

the formula is a = (3.14 × r^{2}) / 2

the equation is a = (3.14 ×5^{2}) / 2

5 is the radius

1. 5^{2} = 25

2. 3.14 × 25 = 78.5

3. 78.5 / 2 = 39.25

I hope this helped! :)

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