Question

Q6. Find the cost of erecting a fence around a square field whose area is 9 hectares, if fencing costs 35 per meter.​

Answer 1

Step-by-step explanation:

for fence

perimeter of square = (9)^2 =81

fencing costs 35 per meter.

total cost = 35× 81 = 2835

Answer 2

$\: \: area \: of \: square = 9 \: hectare$

$\: \: we \: know$

$\: \: \: \: \mathcal {1 \: hectare = 10000 \: metres}$

$\: \: \: 9 \: hectares = 90000 \: metres$

side of square = 300 m

perimeter of square = 4 × 300

=> 1200 m

$cost \: of \: fencing$

$= > \: \: \: \: \: \: \: \: \:1200 \times 35$

$= > \: \: \: \: \: \: \: \: \: \: 42000 \: rs$