Question

2. Find the cost of fencing a square field at Rs 25 per metre whose area is 1156 m2.
3 A township has 324 houses in a square shape. Find how many rows of houses are​

Answer 1

Answer:

2. Rs 3400

3. 18 rows

Step-by-step explanation:

2. Given, area of square field = 1156 m²

We know that area = (side)². Therefore

side =

$\sqrt{1156} = 34$

And, perimeter = 4×side = 4 × 34 m = 136 m.

Cost of fencing = Rate × Perimeter = Rs 25 × 136 = Rs 3400.

3. It is given that houses are in square shape. So,

No. of rows = No. of columns = x (suppose). Then,

$x \times x = 324$

${x}^{2} = 324$

$x = \sqrt{324} = 18$

Therefore, number of rows = 18.