This problem should not give you too much difficulty. The area of a triangle is (LxH)/2. The area of a rectangle is LxH. Calculate the area of each triangle and the three rectangles.
When added together, you should get 75.75cm².
I would show the work for you, but just work through it slowly, and you should get the same thing.
Answer:

Step-by-step explanation:
The general point on a unit circle is given by


where

is the terminal side of the angle in standard position.
Therefore


lies on this circle
This angle intersects the unit circle at

Hence we must have


Answer:
42.39 cubic feet
Step-by-step explanation:
Do you mean 90,000?
If so, then move the decimal 4 places to the left to make the number land between 1-10. Then use the number of places as the power of 10. If you are moving the decimal right, then the power will be negative.
9x10^4 is 90,000 in scientific notation.
9x10^-4 is 0.0009 in scientific notation.
Answer: 1.75 amps
<u>Step-by-step explanation:</u>
V (voltage) = I (current) · R (resistance)
V = 3.5 (110)
= 385
When Resistance is doubled, the current is cut in half.
V = I R
385 = I (2 · 110)

1.75 = I