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timofeeve [1]
2 years ago
5

What is the equation to find the Surface Area for a Cone?

Mathematics
2 answers:
Papessa [141]2 years ago
6 0
The answer to your question is: A=πr(r+h2+r2)
defon2 years ago
4 0

Answer:

A=πr(r+h2+r2)

Step-by-step explanation:

literally just search it up

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4. Find area of irregular shape <br><br><br> 5. Find area of BLUE portion of shape
lisov135 [29]

Answer:

4. Option 3: 65.1 cm^2

5. Option 3: 3.4 inches^2

Step-by-step explanation:

<u>Question 4 :</u>

We can see that there is a rectangle and a half circle in the picture.

So we will find the area of both separately

For the area of rectangle

Area=length*width

=8*5

=40 cm^2

We know that the line which is representing the diameter has length 8 cm

To find the radius

r=d/2

=8/2

=4 cm

As we cannot find the area of half circle, we will find the area of full circle and will divide it in half.

So,

area= πr^2

=3.14*(4)

=3.14*16

=50.24 cm^2

Area of half circle=(Area of full circle)/2

=50.24/2

=25.12 cm^2

So the area of shape will be

Area of rectangle+area of half circle

=40 cm^2+25.12 cm^2

=65.12 cm^2

Rounding off to nearest 10 will give 65.1 cm^2

So, option 3 is the correct answer ..

<u>Question 5 :</u>

To find the area of shaded region we have to find the area of circle and area of square in which it is inscribed

So,

area of circle= πr^2

=3.14*(2)^2

=3.14*4

=12.56 inches^2

And to find the area of square we need one of its side, we can clearly see that the diameter of circle will be equal to the side of square

So,

Side of square=s=r*2

=2*2

=4 inches

Area of square=s^2

=4^2

=16 inches^2

To find the area of shaded region we have to subtract the area of circle from the area of square

So,

Area of Shaded Region=Area of Square-Area of Circle

=16-12.56

=3.44 inches^2

Rounding off to the nearest 10 will give 3.4 inches^2 ..

So, option 3 is the correct answer ..

7 0
3 years ago
The variable Z is directly proportional to X. When X is 3, Z has the value 57. What is the value of Z when X = 8
Olin [163]
When x = 3 z = 57 57/3 = 19
19*8 = 152
So when X is equal to 8, Z is equal to 152.
5 0
3 years ago
Standard algorithm 3÷5316
omeli [17]
0.00056433 is the answer
7 0
3 years ago
Solve seven 2/3-1 2/4+3 6/8 choose the numbers to complete complete the next number numbers may be used once or not at all
Bezzdna [24]

Answer:

9 11/12

Step-by-step explanation:

Solve 7 2/3-1 2/4+3 6/8

We are to the above fractions

7 2/3 - 1 2/4 + 3 6/8

The Lowest Common Denominator = 24

(7 - 1 + 3) + ( 2/3 - 2/4 + 6/8)

9 + (16 - 12 + 18/24)

9 + 22/24

9 11/12

8 0
3 years ago
Does anyone understand this
Veronika [31]
Uh I don’t think so.

Sorry! But stay safe! :)
3 0
3 years ago
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