Question
The diagonal of the floor of a rectangular closet is 7.5
ft. The shorter side of the closet is 4.5 ft. What is the area of the closet in square feet?Solution
Diagonal of the floor D = 7.5 ft. Breadth of floor b = 4.5 ft. Let the length of the floor be x ft. As we know, D2 = x2 + b2 7.52 = x2 + 4.52 x2 = 56.25-20.25 x2 = 36 x = √36 = 6 ft. Length of the rectangle x = 6 ft. Area of the rectangle = x x b = 6 x 4.5 = 27 square ft.
A person lends ₹16,000 to a client at a simple interest rate of 8% per annum. After 30 months, the client repays ₹9,200 and requests an extension fo...
A man invested Rs. 30,000 at simple interest of 8% p.a. If he had instead invested the same sum on compound interest of 8% p.a., compounded annually, th...
A sum when invested at simple interest of 12.5% p.a. amounts to Rs. 10,000 after 2 years. If the same sum was invested at simple interest of 9% p.a. fo...
Aman invested 20% of an amount, denoted as Rs. 'P', in a compound interest scheme with an annual interest rate of 10%, compounded annually. After 2 year...
Rs. 14000 invested for 2 years in a scheme offering compound interest (compounded annually) of 15% p.a. gives an interest that is Rs. 20 less than the i...
The difference of S.I and C.I on an amount of Rs. 40000 for 2 years is Rs. 64. What is the rate of interest?
Ajay and Raju have a total sum distributed between them in the ratio of 12:5. Ajay invests his portion at a simple interest rate of 20% per annum for 15...
Meera took Rs. 3600 at R% S.I. and Rs. 5400 at (R + 4)% S.I. for 3 years. If the total interest amounted to Rs. 3888, find the rate on Rs. 5400.
Determine the value of 'K' if an investment of Rs. 30,000, made under a simple interest scheme at an annual rate of 18%, yields an interest amount of Rs...
Simple interest earned on an amount of Rs.1600 at rate of R% per annum after 4 years is Rs.256. Find the simple interest earned on an amount of Rs.1800 ...
