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3 years ago

Work out the surface area of this cylinder radius 2cm and height 4cm pls help

Mathematics

1 answer:

Alex3 years ago

6 0

Step-by-step explanation:

surface area of cylinder is

2×pi×r (h+r)

2×22/7×2 (4+2)

88/7 (4+2)

75.4 cm square

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Mr.Jones earned $4,800.00 a week. One week he saved 1/5 of his wages was spent?

vivado [14]

Answer:

960

Step-by-step explanation:

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So 960 is our answer.

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3 years ago

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3 years ago

Solve the equation: x2 - 12x = -36

Natalija [7]

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3 years ago

Read 2 more answers

What number would you add to the equation below to complete the square?x2 + 4x = 0?

julia-pushkina [17]

------------------------------------------------------------------
Equation
------------------------------------------------------------------
x² + 4x = 0

------------------------------------------------------------------
Add a constant
------------------------------------------------------------------
x² + 4x + (4/2)² - (4/2)² = 0 ← Add 2² to form perfect square

------------------------------------------------------------------
Evaluate bracket
------------------------------------------------------------------
x² + 4x + 2² - 2² = 0

------------------------------------------------------------------
Form the perfect square
------------------------------------------------------------------
(x + 2)² = 4

------------------------------------------------------------------
Square root both sides
------------------------------------------------------------------
(x+2) = $\pm$ √4

------------------------------------------------------------------
Evaluate the square root
------------------------------------------------------------------
(x+2) = $\pm$ 2

------------------------------------------------------------------
Solve x
------------------------------------------------------------------
x = 2 - 2 or x = -2 - 2

x = 0 or -4

------------------------------------------------------------------
Answer: The constant to add is 4 and the value of x = 0 or -4
------------------------------------------------------------------

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3 years ago

Solve 36x^2-22x=14x-9

frutty [35]

x=1/2

i hate the minimum word count

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3 years ago

Work out the surface area of this cylinder radius 2cm and height 4cm pls help​

Work out the surface area of this cylinder radius 2cm and height 4cm pls help