Step-by-step explanation:
I guess the 3.14 is to be used for pi (and not r, which is what we need to find out).
the volume of a cylinder is ground area × height.
the ground area is the area of a circle, which is pi×r².
so, we have
pi×r²×height = 115 cm³
3.14×r²×7.7 = 115 cm³
3.14×r² = 14.93506494...
r² = 4.756390107...
r = 2.18091497... cm
The answers are A. and B.
Step-by-step explanation: I just took the test and it was right ; )
Answer:
1.) 1/5 2.) 1/8 3.) 1/6 4.) 3/10 5.) -7/12 6.) -11 2/5 hope this helped
Step-by-step explanation:
Answer:
Step-by-step explanation:
73.44
if it is a 20% tip = 12.24
61.20 + 12.24= 73.44
Answer:
approximation is often useful when it is not a very good one