A triangle has legs of 5cm and 6cm. How long is its hypotenuse? Round to the nearest tenth!

To solve this you use the pythagorean’s theorem which states that a^2 plus b^2 = c^2.
c being the hypotenuse
and a and b being the legs of the triangle
so in this example a is 5 and b is 6
so we ca. plug it in to the equation and we get : 5^2 plus 6^2 equals c^2
which further simplifies to 25 plus 36 = c^2
then add 25 and 36:
61 = c^2
then find the square root of both sides to get the variable (c) alone
square root of 61 = square root of c
which is 7.81 = c
that’s in decimal form
however since it’s says round to the tenth we can round the answer to get 7.8
therefore your final answer is 7.8
the hypotenuse is 7.8
hope this helped!
let me know if you have any questions