Question

two sides of a triangle measure 15 cm and 21 cm. which of the following could be the measure of the third side

A. 4 cm
B. 5 cm
C. 6 cm
D. 7 cm

Answer 1

I think it’s will be 6

Answer 2

I’m saying 6 just based on the fact if you subtract 21-15=6
Answer:6