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ivann1987 [24]
3 years ago
10

What is the surface area of this rectangular prism

Mathematics
1 answer:
Marina CMI [18]3 years ago
5 0

Answer:

C. 490 \textrm{ units}^{2}

Step-by-step explanation:

The formula for surface area is

LA + 2B

LA indicated Lateral Area and can be found multiplying perimeter of base by the height.

7 + 7 + 14 + 14 = 42 * 7 = 294

Multiply the LA from above with the area of base times 2.

98 * 2 = 196

294 + 196 = 490, so the surface area of the rectangular prism is 490 units.

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3 years ago
a rectangle is 28 feet by 41 feet. If it can be determined, which of the following gives the whole number length, in feet, of a
rjkz [21]

Answer:

c = 20 ft  

Step-by-step explanation:

The largest square will be 14 sqrt(2) ft long


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use the pythagorean theorem

a^2 + b^2 =c^2

we are limited by the shortest side of the rectangle

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each side of the triangle is 1/2 the length of the short side of the rectangle or 14 ft

a^2 + b^2 =c^2

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c = 19.799ft

to the nearest whole number

c = 20 ft  


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3 years ago
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