Question

Does anyone know how to do this ??

Answer 1

2(3 exponent 2) + 4(3)(5) follow my equation and you should get your answer. all you have to do is replace the letters in the formula in the needed numbers. For instance s= 3 and h=5 , therefore you replace the s in the formula to a 3 and the h in the formula to a 5

Answer 2

Substitute the value of s and h to the formula
SA = 2s² + 4sh
SA = 2 × s² + 4 × s × h
SA = 2 × 3² + 4 × 3 × 5
SA = 2 × 9 + 60
SA = 18 + 60
SA = 78

The surface area is 78 square units