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Area of a parallelogram is 450cm2 and it's altitudeis 20 cm. Find the length of the corresponding side of the parallelogram.

Area of a parallelogram is 450cm2 and it's altitudeis 20 cm.  Find the length of the corresponding side of the parallelogram. 

Grade:7

1 Answers

Arun
25750 Points
6 years ago
Dear student
 
As if we draw a diagonal, it bisect the parallelogram inntwo congruent triangles.
Hence sum of areas of two congruent triangles = area of parallelogram
 
2* (1/2) * side * 20 = 450
Side = 45/2
= 22.5 cm
 
Regards
Arun (askIITians forum expert)

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