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cestrela7 [59]
3 years ago
5

Help with this question, please! I need help!

Mathematics
1 answer:
ella [17]3 years ago
5 0

Answer:

<h2>$357</h2>

Step-by-step explanation:

We have a rectangle measuring 25 feet × 9 feet. Remove from the rectangle two regular hexagons with a side length equal to 2 feet.

The formula of an area of a rectangle:

A_r=lw

l - length, w - width.

Substitute l = 25 ft and w = 9 ft:

A_r=(25)(9)=225\ ft^2

The formula of an area of a regular hexagon:

A_h=6\cdot\dfrac{a^2\sqrt3}{4}

a - side

Substitute a = 2 ft:

A_h=6\cdot\dfrac{2^2\sqrt6}{4}=6\sqrt3\ ft^2

The area of the wall:

A=A_r-2A_h

Substitute:

A=225-2(6\sqrt3)=225-12\sqrt3\approx225-20.785=204.215\ ft^2

Paiting the wall costs $1.75 per ft². Calculate:

(\$1.75)(204.215)\approx\$357

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