Question

the side of rectangular park in 5:4 area 80m square find cost of fencing rs5 per meter.

Answer 1

let its length and breadth be 5x and 4x respectively.

area =5×4×x²

20x²=80m²
x=2

length=10m
breadth=8m

perimeter=2(l+b)
=36m

cost of fencing =rs 5×36
=Rs180 ans

pls mark brainliest

Answer 2

Answer:

cost of fencing = Rs 180  

Step-by-step explanation:

Let the length and breadth be 5 x and 4 x respectively.

Area of the rectangular park = l*b = 5×4×x²

According to the question,

20 x²= 80 m²

x² = 4

x = 2

length = 10 m

breadth = 8 m

Perimeter of the rectangle = 2 (l + b)

= 36 m

The cost of fencing = Rs 5× Perimeter of the rectangle =  Rs 5 * 36

=Rs 180