Correct Answer - Option 3 : 336
Given:
Perimeter of rhombus is 100cm
One diagonal is 48cm
Formula:
Area of rhombus = 1/2 × product of diagonals
Calculations:
Side of a rhombus,
⇒ 100/4 = 25cm
Diagonals of a rhombus bisect each other,
Half of one diagonal,
⇒48/2 = 24cm
Using Pythagoras theorem,
side2 = (half of one diagonal)2 + (half of other diagonal)2
Half of other diagonal,
⇒ √625 - 576 = 7 cm
Length of other diagonal,
⇒ 7 × 2 = 14cm
∴ Area of rhombus = 1/2 × 48 × 14 = 336 cm2