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Calculate the approximate area of the shape to the nearest cm2.

Calculate the approximate area of the shape to the nearest cm2.-example-1
User Aleth
by
6.3k points

1 Answer

6 votes

This is very simple. So you use two formulas:

Rectangle: Length • Width

Semicircle: Area =
(\pi r^2)/(2)

With that, you do 0.8 ÷ 2 = 0.4 because we will be using radius. When solved, you get 0.2512... But for this problem, I will be rounding everything to the nearest hundredths.

Area of semicircle: ≈ 0.25

Now we solve for the rectangle. That is very easy. Just multiply 0.75 • 0.8 and you get 0.6

For this problem, I'm not sure why they make you round to the nearest centimeter, but if you do, you get 1 cm. Otherwise,

Round to nearest tenth: 0.9

Round to nearest hundredths: 0.85

User Saransh Kataria
by
6.4k points
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