The area of the quarter circle with radius 3ft is 
Area of a quarter circle is given by the formula:

Where r represents the radius of the circle
In the quarter circle shown, the radius, r = 3 feet
π = 3.14
Substitute π = 3.14 and r = 3 into the formula 

The area of the quarter circle with radius 3ft is 
Learn more here: brainly.com/question/25843249
Answer: -13, -17, -21
Explanation: Subtract 4 from each term. Do this for 3 terms
Answer:
800
Step-by-step explanation:
8*10*10=
8*10=
80*10=
800cm.
i broke up the problem. hope this helps!