Question

What is the greatest possible whole number value of a congruent side lengths?

A. 9cm
B. 10cm
C. 14cm
D. 15cm

Answer 1

C. 14cm

Explanation:

The square of the longest line, in an obtuse triangle, is greater than the sum of the squares of the other two sides. So it is appropriate for equivalent legs to have a length

L^2 + l^2=2l^2

14^2+14^2=20^

196+196=400

392=400 400

The result: 14cm