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love history [14]
3 years ago
5

Find the surface area of a bar of soap if the diameter is 5 cm and the height is 2cm .

Mathematics
2 answers:
Vinil7 [7]3 years ago
7 0
Please see the pic, I'd solved in it.

s2008m [1.1K]3 years ago
5 0
Given that:
Diameter = 5 cm
which means,
Radius= \frac{diameter}{2} = \frac{5}{2} = 2.5 cm (radius is half the diameter)
and Height = 2 cm
We can assume that the shape is cylindrical 

Formula of the Surface Area of a Cylinder
=2\pir² + 2\pirh
=2\pi(2.5)² + 2\pi(2.5)(2)
=12.5\pi + 10\pi
=22.5\pi cm² (in terms of \pi)
=70.69 cm² ≈ 70.7 cm²

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Please help me this is due in less than 45 minutes!
Natasha_Volkova [10]

Answer:

1.) It's 20th century painting

2.) 0.5 probability

Step-by-step explanation:

If the universal = 60

We need to first get the value of X. That is,

x (x - 2) + x + 2x + 8 + 10 = 60

First open the bracket

x^2 - 2x + x + 2x + 8 + 10 = 60

x^2 + x + 18 = 60

x^2 + x - 42 = 0

Factorise the above equation

x^2 + 7x - 6x - 42 = 0

x (x + 7) -6(x + 7) = 0

x = 6 or - 7

Since x can't be negative, so we will ignore -7

The value for T = 6(6 - 2) = 6×4 = 24

The value for B = 2(6) + 8 = 12 + 8 = 20

If a painting is chosen from random,

If it's from 20th century, the probability will be 34/60 = 0.567

If it's from British painting, the probability will be 30/60 = 0.5

We can therefore conclude that it's from 20th century painting since it has higher value of probability.

The the probability of choosing a British painting will be 30/60 = 0.5

5 0
3 years ago
The following image is a piece of tile from a kitchen floor. What does the bolded line represent?
prisoha [69]

Answer:

a line segment in the correct answer

6 0
3 years ago
Read 2 more answers
Need help please !!!
blsea [12.9K]

Answer:

option C is the correct answer

Step-by-step explanation:

The trigonometric equation you are using has a general form

y = A* tan w*(x - r)

Where

A is the amplitude of the function

w is the frequency rad/s

r  is the phase shift

In your case

A = -2

The frequency is

w = (2*pi)/period

period = pi/4

w = 8

r = -pi/2

y = -2* cos 8*(x + pi/2)

7 0
3 years ago
I need help :(( I need to divide then put it in simplest form
ValentinkaMS [17]

2*3/8

whenever dividing the second fraction flips

2*3/8

You can divide by 2 for 2 and 8

2/2=1

8/2=4

1/4*3

=3/4

Answer is 3/4

7 0
3 years ago
Read 2 more answers
GIVING EVERYTHING IF CORRECT. NO fake answers, you will be reported. And it hurts my grades so please don't.
seropon [69]

Answer:

A. 9.8 ft

Step-by-step explanation:

first convert the degrees to radians:

80° x (pi/180) ≈ 1.396

arc length = r x θ (always in radians)

= 7 x 1.396

= 9.772 ≈ 9.8 ft

3 0
3 years ago
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