Question

if the ratios of the length and breadth of a rectangle is 7:3 and its perimeter is 140 cm find the area of the rectangle​

Answer 1

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Answer 2

Answer:

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Step-by-step explanation:

GIVEN-

PERIMETER OF THE RECTANGLE=140CM

RATIOS OF LENGTH: BREADTH=7:3

MYSTERY TOPIC-

WHAT WILL BE THE AREA OF RECTANGLE???

LET'S GO-

$perimeter \: of \: rectangle = 2(l + b)$

$140 = 2(7x + 3x)$

$140 = 14x + 6x$

$140 = 20x$

$7 = x$

we got the value of x let's use it to find the original length and breadth...

$7 \times 7 = 49 \: cm = length$

$7 \times 3 = 21cm = breadth$

now we can proceed towards area...

$area \: of \: rectangle = length \times breadth$

$21 \times 49$

$= 1029$

MYSTERY RESOLVED

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