Question

If the side of a rhombus is 10cmand one diagonal is 16cmthen find its area ?

Answer 1

half diagonals and a side makes a right triangle so we use pythagoras theorem.

x^2 + (16/2)^2 = 10^2

x^2 + 64 = 100

x^2 = 36

x = 6

other diagonal is 2 (6) = 12.

Area = 1/2 d1xd2.

Area = 1/2 (12)(16)

= 96 cm^2.