Answer:
r = 98 cm
Step-by-step explanation:
Formula for curved surface area = 
where r = radius & h = height
Let the radius be 'r'.
According to the question ,



3a x 3=729
9a=729
--- -----
9 9
a=81
The number is 81.
Check: 3(81)x3=729
Answer:
2^2 * 3^3
Step-by-step explanation:
When breaking of 108 into factors, you first get 9 and 12. Then, the 9 gets split into a 3 and a 3. Meanwhile the 12 is split into a 3 and a 4. Finally the 4 is split into a 2 and a 2. So you end up with 2*2*3*3*3, which is the same as 2^2 * 3^3
Answer:
84
Step-by-step explanation:
We have:
c
-7 = ---------
-12
To solve for c, multiply both sides of this expression by -12. This results in 84 = c (Answer Choice C).