Find the perimeter of a triangle whose sides are 3, 4 and 5cm.

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Given:
a = 3 cm
b = 4 cm
c = 5 cm

we know that,
P = + +
= + +
= cm

Perimeter of the triangle is cm.