1.

The ratio between the length and the breadth of a rectangle is 4 : 3 respectively. Also as perimeter is 112 cms. What is the area of a rectangle ?1). 748 sq. cms.2). 768 sq. cms.3). 680 sq. cms.4). 840 sq. cms.

Answer»

Solution

Let the LENGTH be l and the breadth be b.
$\FRAC{l}{b}=\frac{4}{3}$
$b=\frac{3\times l}{4}$
Also, $2\times \LEFT(l+b\right) = 112$
$l+b = 56$
$l+\frac{3\times l}{4}=56$
$\frac{7\times l}{4}=56$
$l=8\times4=32$
$b=56-32=24$
AREA of Rectangle=$l\times b=32\times 24=768.$
Hence option B is the correct answer.











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