the sides of a equilateral are 5cm , 12cm,15cm, and 20cm . the angle between first two aides is 90 degree find the area of quadrilateral
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If the first 2 angles are 90° then we can apply the formula of right angle triangle :
1*5*12/2 + 1*15*20/2
= 5*6 + 15*10
= 180 cm² answer.
Hope it helps :)
If the first 2 angles are 90° then we can apply the formula of right angle triangle :
1*5*12/2 + 1*15*20/2
= 5*6 + 15*10
= 180 cm² answer.
Hope it helps :)
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