The cost of cultivating a square field at the rate of ₹ 160 per hectare is ₹ 1,440. Find the cost of putting a fence around it at the rate of 75 paise per metre.

Find the area of parallelogram, if its two adjacent sides are 12 cm and 14 cm, and if the diagonal connecting their ends is 18 cm.

The area of a square field is 8 hectare. How long would a man take to cross it diagonally by walking at the rate of 4 kmph?

Find the area and perimeter of a square plot of land whose diagonal is 15 m. Give your answer correct to two decimal places.