Answer:
hink of it like a triangle and use the Pythagorean Theorem, which is a^2 + b^2 = c^2. The first time the ladder is 16 feet long and 8 from the base. Since the building and the ground make a right angle, the side opposite (the ladder itself) is the hypotenuse (c^2). Side a is the distance the ladder is from the building (8 feet). So for that one it would be 8^2 + b^2 = 16^2. To get b^2 subtract 8^2 from 16^2 (256-64) the answer is 192 and the square root of that is side b (13.86). Do the same thing for the new problem, where side a is 4 feet instead, so 4^2 + b^2 = 16^2. Using the same steps, 16^2 - 4^2 = b^2. (256-16) The answer is 240 and the square root of that is side b (15.49). Subtract the first answer from this to see how much higher the ladder is now. 15.49-13.86=1.63
Hope you understand and that was helpful!
Step-by-step explanation:
Answer:
10
Step-by-step explanation:
Divide 640 by 64 to find 1/64.
640/64=10
Or multiply 1/64*640=10
