# math

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the floor of a room is a rectangle. it has a perimeter of 22m and an area of 24 square meters.

what are the length and width of the room?

• math -

length --- x
width --- y

x+y = 11 or y = 11-x

xy = 24
x(11-x) = 24
x^2 - 11x + 24 = 0
(x-3)(x-8) = 0
x = 3 or x = 8

if x=3, y = 8
if x = 8, y = 3

the room is 3 by 8

• math -

This must be a closet.

The factors of 24:

3 * 8
4 * 6
2 * 12

Which of those dimensions would give a perimeter of 22 m?

• math -

im in grade 4 i don't know what that is

• math -

Perimeter = 2 times length plus 2 times width

• math -

rieny that doesent make sense it cant be.

• math -

Maya, if you only in grade 4, then forget about my solution.
Go with what Ms Sue has shown you.

the room is 3 metres by 8 metres

check : 3+8 + 3+8 = 22
3x8 = 24

• math -

wow thanks rieny :)

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