Question

The ratio of length and breadth of a rectangular plot is 9:5. If it's breadth is 60 m ,find it's length

Answer 1

Ratio of length : breath = 9 : 5

Define x:

length : breath = 9 : 5

Let x be the constant ratio

length : breath = 9x : 5x

Solve x:

Perimeter = 2(Length + breadth)

280 = 2( 9x + 5x)

280 = 2(14x)

280 = 28x

x = 10

Find the length and breadth:

Length = 9x = 9(10) = 90m

Breadth = 5x = 5(10) = 50m

Find the area:

Area = Length x Breath

Area = 90 x 50 = 4500 m²

Answer: The area is 4500 m²