Question

Area of trapezium is 225 one parallel side is 6 more than thrice the other and height is 5 cm find length

Answer 1

Let the 1st parallel side be x.....

Then,

other one is 3x + 6 .....


Given,

h = 5 cm....

Area = 225


So,

1/2 * ( x + 3x + 6) * 5 = 225

i. e. 4x + 6 = 90

So,

x = 21 cm...



Hence,

Parallel sides are 21cm...

and, 3 (21) + 6

= 69 cm...