If the lower base of an isosceles trapezoid is three times as longs as the upper base and one of its legs measures 10cm, what is the lenght of the lower base if the perimeter of the trapezoid is 36cm?

Question

anonymous · Answer

hey....this is a very easy question cos

perimeter= x+3x+(2*10) = 36
so. 4x=16
and x=4cm
so lower base = 3x = 3*4 = 12
so length of lower base is 12 cm

anonymous · Answer

sorry im not good at math. Thanks for the help

anonymous · Answer

@ankitisphysicist  where did you get 2?

anonymous · Answer

it is in question that trapezoid is isosceles that means both its legs are equal ..so i have taken on leg to be y therefore sum of two legs will be 2y or you can say 2*10

anonymous · Answer

@ankitisphysicist  thanks again !

anonymous · Answer

most welcome