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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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