Find out the ratio of length and the area of a rectangle if the ratio of length amp perimeter of rec...........

Quantitative Aptitiude (CLAT) Mensuration

Find out the ratio of length and the area of a rectangle if the ratio of length & perimeter of rectangle is 1:6 and the area of rectangle is 800 sq.m?

1:20

2:10

5:11

2:13

Explanation:

Explanation: Let the length is x & perimeter be 6x
Let the breadth be B
Then 2(x + B) = 6x
x + B = 3x
B = 2x
Now
Length × breadth = area
x × 2x = 800
2x2 = 800
x = 20
Hence length = 20 m
Ratio of length: area
20 : 400
1 : 20