A parallelogram-shaped mat has a height of 4 cm and a base of 3 cm. How much would it cost to cover a parallelogram-shaped hall with an area of 180 sq.cm with mats, if 1 mat costs ₹.7?
₹. 105
Let n be the number of mats.
Base of mat = 3 cm
Height of mat = 4 cm
Area of one mat = base × height
Area of hall = Area of mat × number of mats
⇒180=4×3×n
⇒n=18012=15
Given that 1 mat costs = ₹. 7
Then 15 mats costs =7×15=₹. 105