Answer:
30.79 cm^2 ( to nearest hundredth).
Step-by-step explanation:
Height = 3/2 of the radius ( as the ratio of r to h = 2:3.).
h = 3r/2. or 1.5r.
Volume of the cylinder = π r^2 h = 12.936
So π r^2 1.5r = 12.936
r^3 = 12.936 / (π * 1.5r)
r = 1.4 and h = 1.4 * 3/2 = 2.1
Total surface area 2π r^2 + 2πrh
= 2π(1.4)^2 + 2π1.4*2.1
= 9.8π
= 30.79 cm^2 answer
Answer:
2 / 1
Step-by-step explanation:
Answer:
1/2 gallons
Step-by-step explanation:
since 1/3of the tank is already full and another 4 gallons fills it up
4 gallons= 2/3 of the tank or the tank is 6 gallons total
75% is equal to 3/4
6*3/4=4 1/2 gallons
since it is 1/3 or 4 gallons full
4 1/2 -4= 1/2
Answer:
Aww! Thanks! Have a great day as well!
Step-by-step explanation:
Solving the expression
we get -2.
Comparing the solution with the one given, you can find the errors.
Step-by-step explanation:
We need to simplify
and identify errors.
Since the steps are not shown, so we cannot identify errors but I can solve the expression and you can compare to find errors.
Simplifying:

Using algebraic rule: if one digit has positive (+) sign and other digit has negative (-) sign then we will perform subtraction. and after subtraction, the sign of bigger value will be the sign of result.
Using the rule and solving:





Solving the expression
we get -2
Comparing the solution with the one given, you can find the errors.
Keywords: Simplifying expressions
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