3 years ago

Step by step explanation please

Mathematics

1 answer:

galina1969 [7]3 years ago

8 0

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

$80 {cm}^{2} + 432 {cm}^{2} \\ 512 {cm}^{2}$

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