Question

Find the area of rombus one side of which measures 20cm and one of whose diagonals is 24cm

Answer 1

the another diagonal is 2×rootover(20^2- 12^2)=2×16=32.the area is 1/2×32×24=384

Answer 2

Answer:

A = 384cm²

a = Side = 20cm

p = Diagonal = 24 cm

a = pq / 2

a = p² + q² / 2

a = 1 / 2 p √4² - p²

= 1 / 2 • 24 • √ 4.20² - 24² = 384 cm³