The surface area the cuboid is 142 inches²
The surface area of the cuboid is given as:
= 2lw + 2lh + 2hw
where, l = length
h = height
w = width
Therefore, the surface area of the cuboid given will be:
= 2lw + 2lh + 2hw
= 2(7×3) + 2(7 × 5) + 2(3 × 5)
= 2(21) + 2(35) + 2(15)
= 42in + 70in + 30in
= 142 inches²
The surface area of the cuboid is 142inches²
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What is the surface area of a cuboid with sides measure 7 in, 3 in and 5 in?
Given,
> Sides = 7inches , 3inches, 5inches.
Now,
> Surface area of cuboid = 2lw + 2lh + 2hw
> 2 (7 × 3) + 2(7 × 5) + 2(3×5)
> 2 (21) + 2 (35) + 2 (15)
> 42 + 70 + 30
> 142 inches²
142 inches²
