Question

5. John is trying to determine the length of the staircase he will need for a deck that is 12 feet high. He wants to start the stairs 21 feet from the deck.

Answer 1

Answer:

Right triangle

legs are 21 and 12

a^2+b^2=c^2

12^2+21^2=c^2

144+441=c^2

585=c^2

sqrt both sides

5√65=c

approx

24.1868=c

about 24.2 feet

Please mark as brainliest if this helped you