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The surface area of a rectangular prism is 150 cm². If all the sides are tripled, what will the new surface area be?
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Feb 5, 2017
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The surface area of a rectangular prism is 150 cm². If all the sides are tripled, what will the new surface area be?
Mathematics
high-school
Nick Bray
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Nick Bray
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SA=2(LW+LH+WH)
if all are trippled then
SA=2(3L3W+3L3H+3W3H)
SA=2(9LW+9LH+9WH)
SA=2(9)(LW+WH+WH)
SA=9(2(LW+WH+WH))
the SA will be multiplied by 9
150 times 9=1350
new surface area is$1350
cm²
Totaltotals
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Feb 6, 2017
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Totaltotals
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Area of rectangle = length * breadth
if all the sides are tripled,,
New Area = 3*length * 3*breadth=9*length*breadth=9*150
Divestoclimb
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Feb 9, 2017
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Divestoclimb
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