Question

The length of a rectangular is three times more than its breadth if the perimeter of a rectangular 32cm find length and breadth

Answer 1

$let \: b = x \\ so \: length = 3x \\ perimeter = 32 \\ perimeter = 2(l + b) \\ 32 = 2(3x + x) \\ \frac{32}{2} = 4x \\ 16 = 4x \\ \frac{16}{4} = x \\ x = 4 \\ b = 4 \\ l = 3 \times 4 \\ = 12$

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Answer 2

Answer:

Step-by-step explanation:

Let, Length( L )=3×Breadth( B )...{given}

Perim.=2×(L+B)=32

=>. 2×(3B+B)=32

=>. 4B=16

B=4 cm

L=4B. L=12 cm.....