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evablogger [386]
3 years ago
6

What is the radius of a cone that has a lateral area of 70TT and a total surface area of 120TT?

Mathematics
1 answer:
Savatey [412]3 years ago
3 0

Step-by-step explanation:

the lateral area of the cone is, well, the lateral area.

the total surface area of the cone is the lateral area plus the area of base circle.

so, the difference between both is the area of the base circle :

120pi - 70pi = 50pi

the area of a circle is

pi×radius²

and that is in our case

pi×radius² = 50pi

radius² = 50

radius = sqrt(50) = 7.071067812... ≈ 7.1 units

therefore, C is the right answer.

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mash [69]

Answer:

5.48

Step-by-step explanation:

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6 0
4 years ago
Read 2 more answers
with one litre of paint you can paint an area of 8m².how much paint will you need for a wall mural that is 10m wide and 3m high?
Sveta_85 [38]

Answer: 3.75 liters

Step-by-step explanation:

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Hope it helped u,

pls mark as the brainliest                -Ayaan707-

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6 0
3 years ago
Point R is the midpoint of line segment XY. If XR=3n+1 and YR=16-2n, what is the length of line segment XY?
Kitty [74]
1) 3n+1=16-2n - add 2n to both sides - you should now be left with 5n+1=16 (remember the 2n gets canceled out) - subtract 1 from both sides - you should now be left with 5n=15 - now you divide by 5 to get n by itself - 15 divided by 5 is 3 - n=3 2) substitute n with 3 in to the original equation - so 3n+1=16-2n now becomes 3(5)+1=16-2(3) - you should get 10 for both so 10=10 3) according to the segment addition postualte , XR + YR = XY. - add 10+10 which stands for the lengths of XR and YR Answer - XY = 20
3 0
4 years ago
Please help me !!!!!!!!!!
Viefleur [7K]

Answer:

question?

Step-by-step explanation:

6 0
3 years ago
Please help, im having a hard time understanding this bit.
wlad13 [49]

It all depends upon what other things are given If hypotenuse is not given, in cosine or reciprocals are useless. In that case only tan and cot will be equally convenient if adjacent sides are given.

3 0
3 years ago
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