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Find the area of the composite figure to the nearest hundredth.

Find the area of the composite figure to the nearest hundredth.-example-1
User BaconJuice
by
8.8k points

2 Answers

3 votes

Answer:


745.45 mm^(2)

Explanation:

(semicircle) A1 = 245.45 mm

(rectangle) A2 = 312.5 mm

(triangle) A3 = 187.5 mm

Formula for semicircle =
A = (1)/(2) \pi r^(2)


(1)/(2)\pi 12.5^(2) = 78.13\pi = 245.45 mm

Formula for rectangle =
A = lw


25 x 12.5 = 312.5 mm

Formula for triangle =
A = (1)/(2) bh


(1)/(2) 30(12.5) = 187.50mm

Now we add them all up to get our answer


245.45 + 312.5 + 187.5 =745.45mm^(2)

User Jorgen Thelin
by
8.5k points
5 votes

Answer:

745.31

Explanation:

1. 12.5^2 * 2 = 312.5

2. (3,14 * 156,25)/2 = 245.31

3. (30 * 12.5)/2 = 187.5

4. 187.5 + 245.31 + 312.5 = 745.31

User Drakax
by
7.9k points

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