40% = 0.40 = 2/5
So multiplying 130 × 2/5 (bc "% of" means multiply)... divide 130 by 5 = 26
What's left over??
2 × 26
4. (26)(2)
The answer is 43.967cm because circumference is equal to pi times the diameter, or two times pi times the radius.
Answer:
the first one
Step-by-step explanation:
multiply by 4 subtract 2
The volume of the balloon is 
Explanation:
The radius of the balloon is increasing at a rate of 3 cm/min.
To determine the volume of the balloon when the radius is 14 cm, we shall use the formula 
The rate of change of r with respect to time t is given by,

Now, we shall determine the

Now, we shall determine the
at
and substituting
, we get,

Thus, The volume of the balloon is 
Answer:A
Step-by-step explanation: