Question

The perimeter of a rhombus is 240cm and one of its diagonals is 80cm. Find its area using
Heron’s formula.

Answer 1

Side = 60 cm

diagonal = 80 cm

area = 2*

\sqrt{120 \times 40 \times 60 \times 60} \\ \\ \\ 100 \times 6 \times 2 \times 2 \sqrt{3}

= 2400*1.23*2

= 2952 *2

area = 5904

Answer 2

Step-by-step explanation:

A≈3577.71cm²..................