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ipn [44]
3 years ago
10

Find the area: to the nearest whole number

Mathematics
1 answer:
NARA [144]3 years ago
6 0

Answer:

The area of the composite area is 400 square millimeters.

Step-by-step explanation:

The area of the composite figure (A), in square millimeters, is found by multiplying the area of the equivalent rectangle, in which a semicircle of the original rectangle is move to the opposite side of the figure, so that quantity of area is conserved:

A = w\cdot h (1)

Where:

w - Width, in millimeters.

h - Height, in millimeters.

If we know that h = w = 20\,mm, the area of the composite figure is:

A = (20\,mm)\cdot (20\,mm)

A = 400\,mm^{2}

The area of the composite area is 400 square millimeters.

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