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galina1969 [7]
3 years ago
7

What ia the common ratio of the sequence? -2 , 6, -18, 54,...

Mathematics
1 answer:
Jlenok [28]3 years ago
7 0
Its a multiplication by -3 on each term, so I think you're gonna answer is by r=-3, maybe?
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Pepsi [2]

Answer:

The height of right circular cone is h = 15.416 cm

Step-by-step explanation:

The formula used to calculate lateral surface area of right circular cone is: s=\pi r\sqrt{r^2+h^2}

where r is radius and h is height.

We are given:

Lateral surface area s = 236.64 cm²

Radius r = 4.75 cm

We need to find height of right circular cone.

Putting values in the formula and finding height:

s=\pi r\sqrt{r^2+h^2}\\236.64=3.14(4.75)\sqrt{(3.75)^2+h^2} \\236.64=14.915\sqrt{(3.75)^2+h^2} \\\frac{236.64}{14.915}=\sqrt{14.0625+h^2}  \\15.866=\sqrt{14.0625+h^2} \\Switching\:sides\:\\\sqrt{14.0625+h^2} =15.866\\Taking\:square\:on\:both\:sides\\(\sqrt{14.0625+h^2})^2 =(15.866)^2\\14.0625+h^2=251.729\\h^2=251.729-14.0625\\h^2=237.6665\\Taking\:square\:root\:on\:both\:sides\\\sqrt{h^2}=\sqrt{237.6665} \\h=15.416

So, the height of right circular cone is h = 15.416 cm

4 0
2 years ago
Can someone help me find surface area??
natita [175]

Answer:

277cm²

Step-by-step explanation:

Base = 9x8=72

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There are 2 triangles with a bottom edge of 8 and a slant height of 11:

1/2(8)(11)=44

72+58.5+58.5+44+44=277cm²

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musickatia [10]

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true

Step-by-step explanation:

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aalyn [17]

Answer:

114

Step-by-step explanation:

19x6=114

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3 years ago
Read 2 more answers
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