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25 August, 18:28

A rectangular pyramid. The rectangular base has a length of 10 centimeters and a width of 2 centimeters. 2 triangular sides have a base of 2 centimeters and a height of 8 centimeters. 2 triangular sides have a base of 10 centimeters and a height of 6.3 centimeters.

What is the surface area of the rectangular pyramid shown?

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  1. 25 August, 21:30
    0
    99 cm2

    Step-by-step explanation:

    1. to break this up a bit first find the area of the base

    10*2 = 20

    2. now 2 triangular sides with the base of 2

    2*8/2 = 8 (each triangle is 8 cm2)

    there's two of them so it's 16

    3. now the last two triangular sides

    10*6.3/2=31.5

    there's two of them so it's 63

    4. add it all up: 20 + 16 + 63 = 99
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