Asked by Justine

Find the altitude, perimeter and area of an isosceles trapezoid whose sides have lengths 10 cm, 20 cm , 10 cm, and 30 cm.

how??

Answers

Answered by Reiny
make a sketch and draw an altitude (height) from the shorter side.
Now you have a right-angled triangle, use Pythagoras

ares of trapezoid = height (sum of parallel sides)/2
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