Question

Find d2 of the rhombus in which d1 = 16 yd and A = 72 yd2.

Answer 1

I will assume that A = 72 yd^2 is the area of the rhoumbus.

The formula of the area is diagona 1 * diagonal 2 / 2

Then d1*d2 / 2 = 72

d2 = 72*2/d1 = 72*2/16 = 9 yd

Answer 2

Area of the rhombus:
A =  d 1 · d 2 / 2
72 = 16 · d 2  / 2
72 = 8 · d 2
d 2 = 72 : 8
Answer: d 2 = 9 yd