Question

Let a= 6 cm, b = 8 cm and c ?

Answer 1

Follow the Pythagorean theorem which is $a^{2} + b^{3} = c^{2}$

So fill in what we know which is a and b to get
$6^{2} + 8^{2} = c^{2}$
then solve the squares to get
36+64=$c^{2}$
add the two numbers to get
100=$c^{2}$
then square root each side to get
10=c

Hope I could help, and I am really good at the Pythagorean theorem so if you need more help just let me know.