Question

The length of two sides of a triangle are 10 CM an 15 CM between what two measures should the length of third side lie

Answer 1

Since the sum of the lengths of any 2 sides of a triangle > third side

So, if third side is X

10 + 15 > X

ie. 21 > X

10 + X > 15

ie. 5

So, possible whole number values of X, which satisfy the above are

X = 6, 7,  8,  9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

So, X lies between 11 & 21