Question

What is the surface area?
2 mm
9 mm
3 mm

Answer 1

Surface area of rectangular prism

=P×h

=2(l+w)×h

=2(3+9)×2

=48mm²

Answer 2

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Given,

Length (l) = 9 mm

Breadth (b) = 3 mm

Height (h) = 2 mm

To find: The surface of it.

We, know that

Surface area of a cuboid = 2(lb + bh + lh)

By using the formula,

= 2(lb + bh + lh)

= 2(9*3 + 3*2 + 9*2)

= 2( 27 + 6 + 18)

= 2(51)

= 102 mm²

Therefore the required surface area is 102 mm²

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