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zloy xaker [14]
3 years ago
15

Pls help me out with this stupid question

Mathematics
2 answers:
Marta_Voda [28]3 years ago
5 0

Answer:

138.248cm²

Step-by-step explanation:

Surface area=2πrh + 2πr²

Surface area=2x3.142x2x9+ 2x3.142x2²

Surface area=113.112+25.136

Surface area=138.248cm²

iVinArrow [24]3 years ago
4 0

Answer:

Answer:

138.248cm²

Step-by-step explanation:

Surface area=2πrh + 2πr²

Surface area=2x3.142x2x9+ 2x3.142x2²

Surface area=113.112+25.136

Surface area=138.248cm²

"credit goes to unknown76th"

Step-by-step explanation:

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Solve the system of equations. If the system does not have one unique solution, determine the number of solutions to the system.
Licemer1 [7]
See photo. Hope it helps

3 0
3 years ago
Two grapefruits and three oranges cost $1.95. Three grapefruits and two oranges cost $2.05.
geniusboy [140]

Answer:

  • one orange costs $0.35  and  one grapefruit costs $0.45

Step-by-step explanation:

<em>let grapefruits be g , let oranges be o</em>

so first equation:

→2g + 3o  = $1.95

→g = ($1.95 - 3o)/2

so second equation:

→ 3g + 2o = $2.05

→ g = ($2.05 - 2o)/3

Solving simultaneously:

→ ($2.05 - 2o)/3 = ($1.95 - 3o)/2

→ 2($2.05 - 2o) = 3($1.95 - 3o)

→ 4.1 - 4o = 5.85 - 9o

→ - 4o + 9o = 5.85 - 4.1

→ 5o = 1.75

→ o = $0.35

Therefore one orange costs $0.35

Then one grapefruit costs g → ($1.95 - 3o)/2

                                               → g = ($1.95 - 3(0.35))/2

                                               → g = 0.45

Therefore one grapefruit costs $0.45

4 0
2 years ago
Use the Distributive Property of Multiplication over Addition to find each missing number.
Svet_ta [14]

Answer:

(3*9)+(3*6)

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Find the volume of a right circular cone that has a height of 11.1 cm and a base with a diameter of 17.2 cm. Round your answer t
vovangra [49]

Answer:

2577.8\text{ cm}^3

Step-by-step explanation:

GIVEN: A right circular cone that has a height of 11.1 cm and a base with a diameter of 17.2 cm.

TO FIND: Volume of cone.

SOLUTION:

radius of cone =\frac{\text{diameter}}{2}=\frac{17.2}{2}=8.6\text{ cm}

height of cone =11.1\text{ cm}

Volume of cone =\frac{1}{3}\pi r^2h

putting values we get

Volume of cone =\frac{1}{3}\times3.14\times8.6\times8.6\times11.1

                           =2577.8\text{ cm}^3

Hence the volume of cone is 2577.8\text{ cm}^3

3 0
3 years ago
Solve for W -5.1=1.3+w/4
Lera25 [3.4K]
-5.1=1.3+w/4
Subtract 1.3 from both sides
-6.4=w/4
Multiply both sides by 4
-25.6=w

Check work:
-5.1=1.3+(-25.6/4)
-5.1=1.3+(-6.4)
-5.1=1.3-6.4
-5.1=-5.1

Hope this helps!  :)
7 0
3 years ago
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