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olchik [2.2K]
2 years ago
7

PLS HELP!! find area of the shape round to the nearest tenth

Mathematics
1 answer:
Diano4ka-milaya [45]2 years ago
3 0

Given:

A regular pentagon with side 14 units and apothem 9.6 units.

To find:

The area round to the nearest tenth.

Solution:

Area of a regular polygon is:

A=\dfrac{1}{2}Pa           ...(i)

Where, P is the perimeter and a is the apothem.

The given figure is a regular pentagon with five sides. So, the perimeter of the given figure is the product of number of sides and the side length.

P=5\times 14

P=70

Putting P=70,a=9.6, we get

A=\dfrac{1}{2}(70)(9.6)

A=(35)(9.6)

A=336

Therefore, the area of the regular polygon is 336.0 square units.

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Answer: Height = 4 centimeters

Area = 144 cm^2

Step-by-step explanation:

So we know that on a rectangle opposite sides are equal in distance.

If one side of the rectangle is 36 centimeters then that means the opposite side is also 36 centimeters.

36 + 36 = 72 centimeters

The perimeter is the sum of all sides, so two out of the four of our sides total to 72 centimeters. So the remaining length of both sides is as follows:

80 - 72 = 8

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8/2 = 4

I'm not sure what the question wants so here is pretty much everything:

Height: 4 cm

Area: 144 cm^2

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Answer:

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