The length of a picture frame is 80 cm and its diagonal is 100 cm . find its perimeter .
please its urgent!
Answers
Answered by
27
By Pythagoras theorem the other side is 60cm
The perimeter =2( l + b)
=2(60 + 80)
= 2(140)
= 280cm
The perimeter =2( l + b)
=2(60 + 80)
= 2(140)
= 280cm
sanjaysarthakmishra:
280cm
Answered by
20
other side = [(100)²- (80)²]½= (180× 20)½= (3600)½ = 60 cm
perimeter = 2(l+b) = 2(80+60) = 2× 140 =280cm
perimeter = 2(l+b) = 2(80+60) = 2× 140 =280cm
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