All categories

3 years ago

A solid cylinder of radius 7cm is 10cm long.find it's total surface area

Mathematics

2 answers:

Anton [14]3 years ago

7 0

Answer:

C. 238π cm^3.

Step-by-step explanation:

Surface area = 2 * area of the circular ends + area of the curved length

= 2π r^2 + 2π r* l

= 2 π 7^2 + 2π 7 * 10

= 98π + 140π

= 238π cm^3.

Talja [164]3 years ago

6 0

Answer:

c. 238πcm3

Step-by-step explanation:

Total surface area =

2pirh + 2pir^2

Given radius r = 7cm and

Height h = 10cm

Total surface area = 2 x pi x 7 x 10 + 2 x pi x (7)^2

140pi + 2 x pi x 49

140pi + 98pi

238pi cm^3

You might be interested in

Write an inequality to describe the graph below ): tysm<33

topjm [15]

Answer:

$y\leq \frac{3}{2}x+1$

Hope this helps! :)

8 0

3 years ago

Help me with 6 and 7 please

Kazeer [188]

#7 is B!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

5 0

3 years ago

Solve and round to the nearest hundredth please!!!

sasho [114]

Answer:

x = 0.96

Step-by-step explanation:

$7 \times 16^{8x - 8} = 3$

$(2^4)^8(x - 1) = \dfrac{3}{7}$

$2^{32(x - 1)} = \dfrac{3}{7}$

$\log 2^{32(x - 1)} = \log \dfrac{3}{7}$

$32(x - 1)\log 2 = \log 3 - \log 7$

$(x - 1) = \dfrac{\log 3 - \log 7}{32}$

$(x - 1) = \dfrac{\log 3 - \log 7}{32\log 2}$

$x = \dfrac{\log 3 - \log 7}{32\log 2} + 1$

$x = 0.961800237...$

Answer: x = 0.96

4 0

3 years ago

“Your salary is $25,000 and you will be receiving a 2.5% pay increase this year. What will your new salary be?”

Naddika [18.5K]

If your current salary is the 100%, and you get a 2.5% increase, that means the new salary would be 102.5% of 25,000. This percentage could also be written as 1.025, which you would multiply to 25,000 to get your new salary.

1.025 · 25,000 = 25,625

Therefore, your new salary would be $25,625

5 0

3 years ago

A web server hosting company advertises 99.999 percent guaranteed network uptime. (a) how many independent network servers would

larisa [96]

<span>Instead of thinking about reliability think of failure. 99.999% reliability =0.00001 chance of failure. And 95% reliability =0.05 chance of failure. Assuming failures are independent (they probably are not) the chance of n servers failing is (0.05)n Find n such that (0.05)n=(0.00001) now do it for (0.14)n=(0.00001)</span>

3 0

3 years ago