7b Evaluate when b= -1 b-3
1 answer:
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Answer:
r = 2
Step-by-step explanation:
= 4r-4
square root both sides
r = 4r-4
r = 2r-2
2r-r = 2
r = 2
Given:
A figure of a rectangular prism with length l, width w and height h.
To find:
The surface area of the rectangular prism.
Solution:
The product of twice of the length l and the width w is:
...(i)
The product of twice of the length l and the height is:
...(ii)
The product of twice of the width w and the height h is:
...(iii)
The surface area of the prism is the sum of (i), (ii) and (iii). So, the expression for the surface area is:
Therefore, the required expression is .