Solvee pls and explain

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Step-by-step explanation:

To get the total surface area, you need to find:

The area of the rectangle, the area of both semicircles and the curved area underneath.

The area of two semicircles is just the same as the area of one circle.

The curved area is half of the curved area of cylinder, so we can just remove the 2.

TSA ≈ 1054cm^2

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

4+3x is the answer

hope you got it