Question

The formula for the area of a rhombus is A= 1/2d1d2, where d1 and d2 are the length of the diagonals

Answer 1

Didn't you mean A = (1/2)d1d2 ?

If so, clear out the fraction by mult. both sides of the eqn by 2:

2A = d1*d2

Now isolate d1 by div. both sides of this result by d2:

2A

------ = d1 (answer)

d2

Explanation: