Question

Find AD if the area of the figure is 97.5m2 and the parallel sides are 1.8m and 6m

Answer 1

Answer:

25 m

Step-by-step explanation:

draw a perpendicular from B to CD say BE then BE || AD and let AD = x metre

so we r dividing the figure into a rectangle ABED( AB= ED= 1.8 & area= 1.8x) and triangle BCE (base= CE = DC-DE= 6-1.8 m & area = 0.5*(6-1.8)*x= 2.1x)

According to the problem

1.8x+ 2.1x=97.5

x= 97.5/3.9= 25