3 years ago

I need help! ASAP!!!

Mathematics

1 answer:

Arisa [49]3 years ago

4 0

Answer:

Step-by-step explanation:

The formula of a surface area of a rectangular prism:

$S.A.=2(lw+lh+wh)$

l - length

w - width

h - height

We have l = 15 mm, w = 3 mm, h = 4 mm. Substitute:

$S.A.=2(15\cdot3+15\cdot4+3\cdot4)=2(45+60+12)=2(117)=234$

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