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CBSE Class 9 Answered

area of right triangle is 240cm and side other than hypotenuse is 30cm.find the perimeter
Asked by bascaljoseph | 07 Feb, 2023, 13:27: PM
answered-by-expert Expert Answer
Area of right-triangle Δ = (1/2) a b , where a and b are sides of right triangle other than hypotenuse.
 
(1/2) a × b = 240 sq.cm ( given )
 
a × b = 480 sq.cm
 
if one side a = 30 cm , then other side = 480/30 = 16 cm
 
hypotenuse = begin mathsize 14px style square root of a squared plus b squared end root space equals space square root of 16 squared plus 30 squared end root space equals space 34 space c m end style
Perimeter = ( 16 + 30 + 34 ) cm = 80 cm
Answered by Thiyagarajan K | 07 Feb, 2023, 14:30: PM

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