The perimeter of a triangle is equal to perimeter of a rectangle. Length of rectangle is 75% of side of a square and ratio of length to breadth of rectangle is 3 : 2. If difference between perimeter of square and that of rectangle is 36 cm, then find perimeter of triangle?

If x+y+z=22 and xy+yz+zx=35, then what  is the value of (x-y)² +(y-z)²+(z-x)²?

What is the volume of a cube whose side is 7.5 cm?

A shopkeeper had 2000 kgs of rice. He sold a part of it at 11% profit and the rest at 17% profit, so that he made a total profit 15.2%. How much rice (in kgs) did he sell at 17% profit?

If the height of a cylinder is increased by 15% and the radius of its base is decreased by 10%, then by what percent will its curved surface area change?

A person invested a sum of Rs. 18,600 at x% per year and another sum that is twice the former at (x+2)% per year, both at simple interest. If the total interest earned on both investments for $$ {3{1\over 2}}$$ years is Rs.23,110.50, then the rate of  interest per year on the second investment is:

The area of a circle, is 3850 sq.m. What will be its circumference?

A shopkeeper sold his goods at half the list price and thus lost 20 %. If he had sold on the listed price, his gain percentage would be