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aleksklad [387]
3 years ago
15

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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Answer with explanation:

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