Need to find surface area

I count three rectangles and 2 triangles.

Top rectangle 15×12

Bottom rectangle 15×13

Back rectangle 15×5

The triangles are right triangles, sides 5,12,13.  So the legs are base and height

Two Triangles     2×(1/2)×5×12

Adding it all up

A = 15×12 + 15×13 + 15×5 + 2×(1/2)×5×12

A = 15(12 + 13 + 5) + 5×12

A = 15(30) + 60 = 17(30)

A = 510

510 square feet

hey there!

if she's saving for six months, let's divide the total number we need for the trip by six, dividing it into the amount that needs to be saved for each month.

500 ÷ 6 =

she needs to save at least this amount each month, so we should use this symbol: ≥

let x be the amount she saves each month.

your final answer is x ≥

hope this !