1.

The length of one side and the diagonal of a rectangle are 8 cm and 17 cm respectively. Find its area (in cm2).1). 2402). 1203). 804). 160

Answer»

Length of the rectangle = 8 cm, Length of the diagonal = 17 cm

In a rectangle,

(Diagonal)2 = (Length)2 + (Breadth)2

⇒ (Breadth)2 = (Diagonal)- (Length)2 = (17)2 - (8)2 = 289 - 64 = 225

⇒ Breadth = √225 = 15

Formula for area of the rectangle = Length × Breadth = 8 × 15 = 120 cm2

∴ Area of the Rectangle = 120 cm2


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