Question

Find the area of a square park whose perimeter is 440 m. Also, find the cost of growing grass on it at the rate of 2.15 per sq m. Prove that

Answer 1

Answer:

Area of the square feild = 12100 m²

Cost for growing grasses = Rs 26015

Step-by-step explanation:

given that,

perimeter of a square park = 440 m

we know that,

perimeter of a square = 4 × side

so

4 × side = 440

side = 440/4

side = 110 m

so,

we have

side of square feild = 110 m

given that,

grasses are grown in the area of the square feild

so,

area of the square feild = side²

= 110²

= 12100 m²

now

given the cost of growing grass =

2.15 per square meter

so,

for 1 m² cost of growing grass = 2.15

so,

cost for 12100 m² = 12100 × 2.15

= 26015

so,

cost for growing grasses = Rs 26015

___________________

Area of the square feild = 12100 m²

Cost for growing grasses = Rs 26015

Answer 2

Answer:

Area of the square feild = 12100 m²

Cost for growing grasses = Rs 26015

Step-by-step explanation:

given that,

perimeter of a square park = 440 m

so

4a = 440

where,

a = side of square

a = 440/4

a = 110 m

side of square feild = 110 m

to find,

cost of growing grass on it at the rate of 2.15 per sq m.

so,

cost = area of the square feild × 2.15

= 110² × 2.15

= 12100 × 2.15

= 26015

so,

cost for growing grasses = Rs 26015

___________________

Answers:

Area of the square feild = 12100 m²

Cost for growing grasses = Rs 26015