Question

11. The diagonal of a rectangle is 10 cms
and is twice the length of one of the
sides. What is the area of the rectangle
in sq. cm?
(a) 1073
(b) 25
(c) 2573
(d) 100​

Answer 1

Answer:

Diagonal=10cm

Diagonal=2×length of its one side

so,

2×length of its one side=10cm

length of its one side=10cm/2

=5cm

therefore

length of its another side={√(10×10)-√(5×5)}

=-25

=√36

6cm

so,Area=l×b

=6cm×5cm

=30 sq.cm