Question

A ground is 60.5m by 39.5 m. find (a) the cost of levelling it at rupees 3.30 per square meter and (b) the number of rounds about the ground a runner takes to run 1km race

Answer 1

Answer:

(A) Area= 39.5x60.5=2389.75m^2

Cost=2389.75x 3.30rupees

=7886.175 rupees

(B) Perimeter = 2*(60.5 + 39.5)

= 200m

Now, 1km= 1000m

Hence, no. Of rounds made in 1 km

=1000/200

=5 rounds

Answer 2

The given question is A ground is 60.5m by 39.5 m. find (a) the cost of levelling it at rupees 3.30 per square meter and (b) the number of rounds about the ground a runner takes to run a 1km race

The given question is that the ground is of a length of 60.5 m and a breadth of 39.5m

we have to find (a)The cost of levelling it at rupees 3.30 per square meter

The solution to this problem is found by calculating the area of the ground.

The area of the ground is the multiplication of length and breadth.

Area = (60.5)*(39.5) m².

The resultant answer is 2389.75 m²

The cost of levelling 1 m² is Rs.3.30

Therefore the cost of levelling 2389.75 m² is

$2389.75 \times 3.30 = 7886.175rupees$

Therefore, the cost of levelling the area is Rs. 7886.175

(b)the number of rounds about the ground a runner takes to run a 1km race

For this, we have to calculate the perimeter of the ground.

The formula to find the perimeter of the ground is

2*(length + breadth).

2*(60.5+39.5)

2*100

200.

for a runner to run 1 km is 1000 m.

the perimeter of the ground is 20 meters.

Therefore, the number of rounds about the ground a runner takes to run a 1km race is 5.

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