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bija089 [108]
3 years ago
12

What is the surface area of the cone to the nearest whole number? Use 3.14 for π.

Mathematics
2 answers:
Eva8 [605]3 years ago
8 0
We know, Surface area of a cone = πr² + πrl
s = 3.14 * (14)² + 3.14 * 14 * 50
s = 615.44 + 2198
s = 2813.44 m²

In short, Your Answer would be Option C

Hope this helps!
Anni [7]3 years ago
8 0

Answer:

2813 sq.m.

Step-by-step explanation:

Height of cone = 48 m

Diameter of cone = 28 m

Radius of cone = \frac{Diameter}{2} = \frac{28}{2}=14 m

Slant height l = 50 m

Total Surface area of cone = \pi r l +\pi r^{2}

                                              = 3.14 \times 14 \times 50 +3.14 \times 14^{2}

                                              = 2198 +615.44

                                              = 2813.44 m^2

Thus the surface area of the cone to the nearest whole number is 2813 sq.m.

Hence Option C is correct.

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