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TEA [102]
3 years ago
9

Please help!!! ill mark you as brain!

Mathematics
1 answer:
tangare [24]3 years ago
7 0

given,

height of triangle(h)=3.5 in.

base of triangle (b)=4 in.

length of side of triangle(s)= 4 in.

length of prism(l)=9 in.

we have,

surface area of traingular prism( A)=bh+2ls+lb

=4×3.5+2×9×4+9×4

=14+72+36

=122 square inches

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