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Lorico [155]
3 years ago
8

The circular base of the cone has a radius of 5 cm. The height of the cone is 12 cm and the slant height is 13 cm. What is the a

pproximate surface area of the cone? Use pi and round to the nearest whole number.
Mathematics
1 answer:
Pachacha [2.7K]3 years ago
7 0

Answer:

283 cm²

Step-by-step explanation:

To find the surface area of the cone, we don't need the height since we already have the slant height.

The surface area of a cone is given as:

A = (π * r²) + (π * r * L)

Where r = radius of base of cone

L = slant height of cone

From the question, r = 5 cm and L = 13 cm

Hence:

A = (π * 5²) + (π * 5 * 13)

A = 78.55 + 204.23

A = 282.78 cm² = 283 cm² (approximating to the nearest whole number)

The approximate surface area of the cone is 283 cm²

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<h3>What is residual value?</h3>

The residual value is the estimated value which is calculated for the end of the lease terms for a fixed asset.

Points and their residual values are shown in the table. A 3-column table with 5 rows.

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Learn more about the residual value here;

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According to the previous expression, the year of Helike's disappearance is:

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According to the previous data, it can be inferred that the expression that represents the number of years elapsed between the disappearance of the Greek city of Helike and the end of the US Civil War is:

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Note: This question is incomplete because the is some information missing. However, I can answer it based on my prior knowledge.

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