A right-angled triangle has two smaller sides of length 5cm and 12cm. What is the length of the hypotenuse?
By Pythagoras' Theorem, we know 52+122 = c2. So c2 = 169, thus c = +13 as lengths are positive.
NC
By Pythagoras' Theorem, we know 52+122 = c2. So c2 = 169, thus c = +13 as lengths are positive.
