The surface area of a cylinder is:
A=2pr^2+2prh
A=2pr(r+h) we are approximating π as 3.14, r=12, and h=8 so
A=2(3.14)12(12+8)
A≈1507.2
A≈1507 m^2 to nearest m^2
Seven hundred ten thousand, two hundred
Answer:
63.5
Step-by-step explanation:
A total of 168 non-commercial vehicles and 60 commercial vehicles use the country's highways during September.
Step-by-step explanation:
Step 1:
Assume the number of non-commercial vehicles to be x and the number of commercial vehicles to be y.
It is given that for every 14 non-commercial vehicles there will be 5 commercial vehicles. So a ratio can be formed as follows;
=
, cross multiplying, we get
, take this as equation 1.
Step 2:
It is also given that there were 108 more non-commercial vehicles than commercial vehicles. So
, take this as equation 2.
If we solve equations 1 and 2, we will get the values of x and y.
Step 3;
Substitute equation 2 in equation 1.
,
,
.
Substitute
in equation 2.
.
So x = 168 and y = 60.
So a total of 168 non-commercial vehicles and 60 commercial vehicles use the country's highways during September.