Question

The sides of a triangle are 3 1/2cm , 4 2/5cm and 5 1/4cm respectively. What is its perimeter?

Answer 1

add them together

Explanation:

3 1/2 cm + 4 2/5 cm + 5 1/4 cm

= 7/2 cm + 22/5 cm + 21/4 cm

= 70/20 cm + 88/20 cm + 105/20 cm

= 263/ 20 cm

= 13 3/20 cm or 13.15 cm