2/14/203EM 7 Do Now - Rearranging Equations

If the volume of a rectangular prism is V = lwh, what equation below could you use to find the length l?

• l = Vwh

• l = V/wh

• l = V + w + h

To find the area of a rectangle you use the formula A = lw. What equation below could you use to find the width of a rectangle?

• w = A + l

• w = A - l

• w = A/l

The area of a rectangle is 400 square feet. The length of the rectangle is 25 feet. What is the width of the rectangle?

• 20 feet

• 16 feet

• 8 feet

• 10 feet

The area of a triangle is 16 square feet. The base of the triangle is 2 feet. What is the height of the triangle? Remember the formula for the area of a triangle is

A = 1/2 bh

• 32 feet

• 16 feet

• 8 feet

• 12 feet

If a + b = c then b =

• c + a

• c/a

• a/c

• c - a

If x = y + z then y =

• x/z

• x + z

• x - z

• z/x

If w/x = z then w =

• zx

• z - x

• x - z

• z + x

If c/d = e + f then e =

• c/d + f

• c/d - f

• c + d + f

• c - d - f

The area of square is 144 square yards. What is the perimeter of the square?

• 24 yards

• 12 yards

• 48 yards

• 36 yards