(1) the diameter is 20 inches whats the radius? And whats the circumference?
Radius is half the diameter, Answer: 10 inches
Circumference is pi times the radius, Answer: 10π inches
I won't bother with the approximation, though this one is easy, 31.4159 inches. I'll leave the rest of the calculator work to you if necessary.
(2) the diameter 11 inches whats the radius? And whats the circumference?
Radius half, Answer: 5.5 inches. Circ: 5.5π inches
(3) the diameter 3.5 inches whats the radius? And whats the circumference?
Radius, 1.75 inches. Circ: 1.75π inches

Length of the room is 5 m and width is 5 + 2 = 7 m.
Hope this helps.
r3t40
Answer:
I think the answer would be the 9 pack.
Step-by-step explanation:
Think, if you divide each of the packs by their price the 9 pack is cheaper for one roll.
After 10 years there will be $22,400 in the account.
Answer:
There are 18 odd numbers
Step-by-step explanation:
1,3,5,7,9,11,13,15,17, 19,21,23, 25,27,29,31,33,35