Question

the length and the breath of rectangle are in a ratio of 3:4 the area is 6912cm²
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Answer 1

Answer:

72 and 96

Step-by-step explanation:

the length and breath are 3x and 4x

area = l*b

6912 = 3x*4x

6912=12x²

x²= 6912/12

x²= 576

x= √576

x = 24

now

3x

3*24

72

4x

4*24

96

Answer 2

Answer:

Length=72 cm

Breadth=96 cm

Step-by-step explanation:

Let the length be 3x and breadth be 4x respectively.

Then, 3x*4x =6912 (As, l*b=Area)

Or, 12x^2=6912

Or, x^2= 6912/12=576

Or,x=√576=24

Or, Length=3x=3*24=72 cm

Or,Breadth=4x=4*24=96 cn

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