Question

How long are the rafters on the roof? (Round your answer to one decimal place.)

Answer 1

@DelTaVsPi @ShirouxGhoul @Ashleyrh1999 @razor99 @dessyj1

Answer 2

Do you know the Pythagorean theorem?

Answer 3

\(a^2 + b^2 = c^2\)

Answer 4

Use the values below for \(a\) and \(b\), and find \(c\), the length of the rafters.

Answer 5

45?

Answer 6

c=45

Answer 7

Use 3 for a and 6 for b, and calculate c.

\(a^2 + b^2 = c^2\)

\(3^2 + 6^2 = c^2\)

\(9 + 36 = c^2\)

\(45 = c^2\)

So far you did it correctly, but notice that 45 is c^2, not just c, so you need to take the square root of 45.

\(c^2 = 45\)

\(c = \sqrt {45} \)

Use your calculator, and round off to 1 decimal place.

Answer 8

thank you, got it! its 6.7