Question

Step by step explanation please

Answer 1

Two equal triangles

2(1/2×b×h)

=2(1/2×8×10)

`= 80 {cm}^(2)`

Three rectangles

=3(l×h)

=3(18×8)

=3(144)

`432 {cm}^(2)`

Total Surface area

`80 {cm}^(2) + 432 {cm}^(2) \\ 512 {cm}^(2)`