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Colt1911 [192]
3 years ago
5

A square rug has an area of 225ft. How long is each side of the rug?

Mathematics
1 answer:
klio [65]3 years ago
8 0

The area formula is b x h, but since its a square the area would be side squared.

here side squared = 225 ft

Square root of 225 is 15, so each side of the rug measures 15 feet

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AleksandrR [38]

Bob need to paint 205 square feet.

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Length of the door = 7 ft

Breadth of the door = 5 ft

Area of the door = length × breadth

                            = 7 × 5

                            = 35

Area of the door = 35 ft²

The given image is a trapezoid.

Top base = 12 ft

Bottom base = 20 ft

Area of the trapezoid = \frac{1}{2} \times\text{sum of the parallel sides}\times\text{height}

                                    $=\frac{1}{2}\times(12+20)}\times15

                                    $=\frac{1}{2}\times 32\times15

                                    = 240

Area of the trapezoid =  240 ft²

Surface area to paint = Area of the trapezoid – Area of the door

                                    = 240 ft² – 35 ft²

                                    = 205 ft²

Hence Bob need to paint 205 square feet.

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