3 years ago

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1 answer:

6 0

Trapezium area h(a+b)/2
Circle area pi*r^2

50(20 + 35)/2 = 1375

pi * 12.5^2 = 156.25pi
Divide by two because that’s a semicircle.
78.125pi also 625*pi/8
1375 - 78.125pi = 1129.563mm^2

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