Seudónimo Seudónimo

09-05-2017
Mathematics

contestada

1) what is the surface area of a rectangular prism if its height is 6 in and its width 3.5 in and the length is 4 in?
2) what is the surface area of a cube if the length and the width and the height is 9 in?

Respuesta :

09-05-2017

1. SA = 2(lw + wh + lh)
SA = 2(4*3.5 + 3.5*6 + 4*6)
SA = 2(14 + 21 + 24)
SA = 2(59)
SA = 118 in^2

2. SA = 6s^2
it is a cube so all side are equal which is equal to 9 in.
SA = 6(9)^2
SA = 6(81)
SA = 486 in^2

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