Question

Math question! Thanks if you help

Answer 1

Answer:

pythagoras theorem

$a^2+b^2=c^2$

so we have a and b

12 and 9

so ... $12^2+9^2 = 225$

take the square root to find c, since 225 is c^2

so √225 = c = 15

Answer 2

Answer:

B) 15

Step-by-step explanation:

This is a right triangle and in right triangles the square length of hypotenuse is equal to the sum of square length of base and side length

9^2 + 12^2 =√hypotenuse

225 = √hypotenuse

15 = hypotenuse