The perimeter of a rectangle is 50 cm. Its area and length are in the ratio of 5 : 1. Find the length of the rectangle.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e 20 cm
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Understanding |
Application |
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Area : Length = 5 : 1 Perimeter of rectangle = 2(l + b) Area of rectangle = length × breadth |
Let length = x and Area = 5x 50= 2(x+ breadth) 25= x+ breadth breadth= 25 - x 5x= x × (25 - x) 5= 25 - x x= 25 - 5 x= 20 Length = 20 cm |