Question

A rectangular sheet of paper is 25/2cm long and 32/3 cm wide. Find its perimeter. *​

Answer 1

`(214)/(6)`cm

Explanation:

To find the perimeter of a rectangle, add all its sides.

Length + Length + Width + Width

`(25)/(2) + (25)/(2) + (32)/(3) + (32)/(3)`

=
`(50)/(2) + (64)/(3)`

Find the LCM. It will be 6. Multiply the denominators with 2 and 3, respectively to get similar denominators, and that you can add.

=
`(50)/(2)(X 3)/(X 3)` +
`(32)/(3) (X2)/(X2)` (the X is the multiplication sign..)

=
`(150)/(6)` +
`(64)/(6)`

Now that the denominators are both the same, you can add the fractions.

=
`(214)/(6)`cm ( or also 35.7cm (to 3 significant figures) or
`35(4)/(6)`)

Answer 2

46.3cm

Explanation:

• perimeter is length around shape
• 25/2 multiply by 2 becoz it's got two equal sides
• 32/3 multiply by two for the other equal sides
• add answers together to give you
• 46.3cm