Question

(a) The perimeter of a rectangular garden is 356 m. If the length of the garden is 95 m, what is its width?(b) The area of a rectangular window is 8514 cm2. If the width of the window is 86 cm, what is its length?

Answer 1

The perimeter of a rectangle is given by:

`P=2w+2l`

we know that P=356 m and l=95 m, plugging this values into the expression above and solvinf for w we have:

`\begin{gathered} 356=2w+2(95) \\ 2w=356-2(95) \\ 2w=356-190 \\ 2w=166 \\ w=(166)/(2) \\ w=83 \end{gathered}`

Therefore the width of the rectangle is 83 m.