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2 years ago

Find the perimeter of this figure. Please show work.

Mathematics

1 answer:

Elena-2011 [213]2 years ago

7 0

Answer:

40.56 ft

Step-by-step explanation:

The perimeter is the sum of the lengths of the "sides" of this figure. Starting from the left side and working clockwise, the sum is ...

P = left side (8 ft) + top side (10 ft) + semicircle (1/2×8 ft×π) + bottom side (10 ft)

= 28 ft + 4π ft

= (28 +12.56) ft

P = 40.56 ft

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Akimi4 [234]

Answer:

lw + $\frac{1}{2}$ × π × $(\frac{l}{2} )^{2}$ ⇒ Answer D is correct

Step-by-step explanation:

First, let us find the area of the semi-circle.

Area = $\frac{1}{2}$ × π × r²

Given that,

diameter of the semi-circle is ⇒ l

∴ radius ⇒ l / 2

Let us find it now.

Area = $\frac{1}{2}$ × π × r²

Area = $\frac{1}{2}$ × π × $(\frac{l}{2} )^{2}$

Secondly, let us find the area of the rectangle.

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Given that,

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Tota area = lw + $\frac{1}{2}$ × π × $(\frac{l}{2} )^{2}$

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2 years ago

Find the perimeter of this figure. Please show work. ​

Find the perimeter of this figure. Please show work.