Question

Plz help me, im stuck on this question, It says

Find the perimeter of the following rectangle,
Write your answer as a mixed number in simplist form,
Be sure to include the correct unit in your answer.

Answer 1

Perimeter of rectangle =2(l+b)

=2(3*1/10+3/4)

=2(3/10+3/4) (lcm=40)

=2(12/40+30/40)

=2(42/40)

=42/20

= 21/10

=21/10 cm

Answer 2

`perimeter = 2(3 (1)/(10)) + 2 ((3)/(4))`

`perimeter = (31)/(5) + (3)/(2)`

`perimeter = (62)/(10) + (15)/(10)`

`perimeter = (77)/(10)`

`perimeter = 7 (7)/(10)`

The unit is just cm.

//

I might not be right. Double check to make sure. Hope that gives you a general idea of how to do it.