Question

The area of a square field is 81hectares. find the cost of fencing the gield with a wire at the rate of $2.25per meter ​

Answer 1

Answer:

1 hectare = 10000 m^2

81 hectares = 810000m^2

Area of square = side × side

810000 = side^2

side=√810000

= 900m

perimeter of square = 4×side

= 4×900

= 3600 m

given:

rate = $2.25 per meter

perimeter = 3600m

cost of fencing=

rate × perimeter

= 2.25×3600

= $8100 (answer)

Answer 2

✪ Cᴏʀʀᴇᴄᴛ Qᴜᴇsᴛɪᴏɴ :-

The area of a square field is 81 hectare. Find the cost of fencing the field at the rate of Rs 2.25per sq. m

✪ Gɪᴠᴇɴ :-

• The area of a square field is 81 hectare

✪ Tᴏ Fɪɴᴅ :-

• Cost of fencing the field at the rate of rs 2.25per sq. m

✪ Sᴏʟᴜᴛɪᴏɴ :-

✰ Area of the square field= 81 hectare

✰ 1 hectare = 1 square meters

✰ 81 hectare = 81 square meters

Let the side of the field be x

➸ x² = 81

➸ x = √81

➸ x = 900

perimeter of the square field = 4x

➸ 4 (900)

➸ 3600m

Cost of fencing = Rs 2.25 per meter

Total cost of fencing ➸ 3600×2.25

➸ 8100 /-

⛬ Cost of fencing the field at the rate of rs 2.25per sq. m is 8100/-