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borishaifa [10]
2 years ago
8

Find the area of this semi-circle with diameter, d = 49cm. Give your answer rounded to 2 DP.

Mathematics
1 answer:
lilavasa [31]2 years ago
8 0
The area of a semicircle is (πr^2)/2, with r being the radius
the radius is going to be the diameter diced by two: 49/2 = 24.5
now, plug in and solve
(π24.5^2)/2 = 600.25π/2 = 300.125 π
π is roughly equivalent to 3.14, so we can multiply to simplify
area = 942.87

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