He can use 4 half dollars, since 2 half dollars make a whole dollar.
He can use 2 regular dollars, since each 1 dollar bill plus another is 2.
He can also use 8 quarters because 4 Quarters makes a whole dollar.
Answer:

Step-by-step explanation:
We can apply Pythagoras' Theorem.

Answer: 8
Step-by-step explanation:
Pythagorean theorem - a^2+b^2=c^2
a^2+15^2=17^2
a^2+225=289
(subtract 225 from both sides)
a^2=64
(sq root both sides)
a=8
Answer:
Option a is the best method with compass and straight edge.
Step-by-step explanation: