Answer:
a balance and a beaker of water
hope it helps mark as brainliest
81 times a number minus 77 is equal to -77 less than the number 81x-77=x-77
Answer: 94.24 feet.
Step-by-step explanation:
1. To solve this exercise you must apply the formula for calculate the perimeter of a circle, which is shown below:

Where
is the radius of the circle.
2. You can calculate the radius of the circle by dividing the diameter by 2, as following:

3. Substitute this value into the formula. Then, you obtain that the result is:

Answer:
Step-by-step explanation:
180 - 63 = 117= b
c= 63 (v.o.a)