Question

please help me out with these questions

Answer 1

since the cost has been given ₹20/acre the total area is covered upto ₹9600 so the field is
$\frac{9600}{20} = 480 \: square \: m$
$now \: 480 = \frac{1}{2} \times b \times h \\ so \: 480 = \frac{1}{2} \times2.4h \times h \\ {h }^{2} = 400 \\ h = 20 m\\ hence \: b = 2.4 \times 20 = 48m$