SOLUTION: Sam has a trapezoid with an area of 12 square units and whose largest side is 5 units. If he scales the trapezoid so that the largest side is 15 units, find the area of the new tra

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Question 1157168: Sam has a trapezoid with an area of 12 square units and whose largest side is 5 units. If he scales the trapezoid so that the largest side is 15 units, find the area of the new trapezoid.
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

Because the two trapezoids are similar, the ratio of their largest sides is 3
the ratio of their the areas should be same
12%2Fa=3
a=12%2A3
a=36
the area of the new trapezoid is 36