A rectangular garden is 2 ft longer than it is wide Its area

A rectangular garden is 2 ft longer than it is wide. Its area is 399 ft^2. What are its dimensions? width ___________ ft length ____________ ft Find the length x if the shaded area is 28 in^2. x = ________in. A box with a square base and no top is to be made from a square piece of cardboard by cutting 4-in, squares from each corner and folding up the sides, as shown in the figure. The box is to hold 144 in^3. How big a piece of cardboard is needed?

Solution

Q13) We have

Let x as length and y as width

x = y+2, xy = 399

we get x = 21 and y = 19

So, width = 19

Length = 21

Q14) The area can be written as

14x+13x = 28

x = 28/27