Question 797057
Hi there, you would use pythagoras's theorem to calculate the hypotenuse
{{{c^2 = a^2 + b^2}}}
give 15cm the value of a, and 20cm the value of b.
now calculate:
{{{c^2 = 15^2 + 20^2}}}
{{{c^2 = 225 + 400}}}
{{{c^2 = 625}}}
{{{c = sqrt(625)}}}
{{{c = 25}}}