2 years ago

Find the total surface area of this cone, leaving your answer in terms of pi

Mathematics

1 answer:

ra1l [238]2 years ago

7 0

Answer:

I need numbers to do a step by step

but the formula for the surface area of a cone.

Firstly, you work out the circle, pi x radius squared.

then you work out the cone

You can now use the measurement of the side to find the area of the cone. The formula for the area of a cone is 3.14 times the radius times the side (πrl).

So the surface area of the cone equals the area of the circle plus the area of the cone and the final formula is given by:

SA = πr2 + πrl

You might be interested in

Can someone solve this please

Elanso [62]

Question 47= 33 ounces
Question 48= 98 Fahrenheit
Question 49= 127 millimeters
Last question= 2 inches

7 0

2 years ago

if your dad gives you $6.00 for washing your hands for the six seconds you wash your hands how much money will you get in a day

Colt1911 [192]

Is that the whole problem

3 0

3 years ago

Read 2 more answers

In Jacks class, 75% of the students are girls. there are 18 girls in the class. what is the total number if students in the clas

Andre45 [30]

18 = .75x
/.75 /.75 (divide both sides by .75 to isolate x)

24 = x

24 total students

Hope this helps!

6 0

3 years ago

Read 2 more answers

Determine whether a triangle can be formed with the given side lengths. 11 ft, 2 ft, 15 ft

dimulka [17.4K]

No it can not be formed because the sum of the two smaller side lengths is not greater than the longest length

6 0

2 years ago

Read 2 more answers

. Compute the required sample size given the required confidence in the sample results is 99.74% (Z score of 3). The level of al

Shtirlitz [24]

Answer:

900 sample size

Step-by-step explanation:

To determine the sample size for a proportion, the margin of error formula is used to determine this:

$E=Z_{\frac{\alpha}{2} }*\sqrt{\frac{\hat p \hat q}{{n} }$

$n=\hat p \hat q*(\frac{Z_{\frac{\alpha}{2} }}{E} )^2$

Where p is the proportion, E is the margin of error, n is the sample size, q = 1 - p, $Z_\frac{\alpha }{2}$ is the z score.

Since the proportion is not known, the sample size needed to guarantee the confidence interval and error is at p = 0.5 and q = 1 - p = 1 - 0.5 = 0.5

E = 5% = 0.05, $Z_\frac{\alpha }{2}$ = 3. Hence:

$n=0.5*0.5*(\frac{3}{0.05} )^2\\\\n = 900$

6 0

2 years ago

Find the total surface area of this cone, leaving your answer in terms of pi​

Find the total surface area of this cone, leaving your answer in terms of pi