Practicing Success
Calculate the area of rectangle field where one side is 16 cm and diagonal 20 cm. |
$182 ~cm^2$ $190 ~cm^2$ $192 ~cm^2$ $164 ~cm^2$ |
$192 ~cm^2$ |
ACD isa right angle triangle, let ,AC = 20 cm and AD = 16cm By using pythagoras theorem, AC² = AD² + DC² 20² = 16² + DC² 400 = 256 + DC² DC = 12 cm Area of rectangle = l × b = 16 × 12 192 cm² The correct answer is Option (3) → $192 ~cm^2$ |