The diagonal of a rectangle is 5 cm and one of at sides is 4 cm. Its area is
a) 20 sq.cm.
b) 12 sq.cm.
c) 10 sq.cm.
d) none of these
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Answer:
(b) 12 sq.cm
Step-by-step explanation:
The diagonal of a rectangle = 5 cm
One of its sides = 4 cm.
Other side =√( 5²–4²)
= √ (25–16)
= √ 9
= 3 cm
Area of the rectangle = length×breadth
= 3×4 cm²
= 12 cm²
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