Answer:The ladder and the ground form a right triangle. Use the Pythagorean Theorem to find the other leg of the triangle.
Explanation Steps: a^2 + b^2 = c^2
a^2 + 4^2 = 15^2
a^2 + 16 = 225
a^2 = 209
a = 14.5 feet
It's pi times 4.5.... Then just round.
When multiplying by 100 just add 2 zero's behind your second number. ANSWER:5,000
23(3) + 3
= 72
Why do you write 2 equations?