Question

23.
The area of a square is 81 cm. Find its perimeter and the leng
24. A square field has an area of 6.25 ares. Find the cost of putting a fence round it at * 32.50 per
metre. (Hint: Area = (6.25 x 100) m2 = 625 m2]
25. The cost of ploughing a square field at 13.50 per square metre is 5400. Find the cost of fencing​

Answer 1

Answer 1

The area of a square =

$l</p><p> ^{2}$

where l is the length of the square's side.

$l </h3><h3>2</h3><h3>=</h3><h3>81 \\ </h3><h3>⇒</h3><h3>l</h3><h3> = </h3><h3>√</h3><h3>81</h3><h3> \\ = </h3><h3>9$

hence Perimeter = $4$m

hope its help u

Answer 2

The area of a square =

$l ^{2}$

where l is the length of the square's side.

$\begin{gathered}l 2 = 81 \\ ⇒ l = √ 81 \\ = 9\end{gathered}$

hence Perimeter = 44 m