The length of the edge of the isosceles triangular surface is 10 feet and two equal side is 11 feet with the length of the tent is 12 feet. (a) Find the total surface area of triangular faces of the tent. (b) What should be the capacity of the tent? (c) The cost of cloths of the wide 3.75ft of the tent is Rs. 15 per feet. Is Rs. 1500 sufficient for the cloths? Calculate and write with reason.

Its a Grade 9 question Please help​