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Allushta [10]
3 years ago
11

I need help asap!!!!!

Mathematics
1 answer:
Sladkaya [172]3 years ago
6 0

The surface area of the trash can = 25.12 ft²

Solution:

The given image is splitted into two shapes.

One is Cylinder and the other is hemisphere.

Radius of the cylinder = 2 ÷ 2 = 1 ft

Height of the cylinder = 4 – 1 = 3 ft

Curved surface area of the cylinder = 2\pi rh

                                                            =2\times 3.14 \times 1 \times 3

                                                            = 18.84 ft²

Curved surface area of the cylinder = 18.84 ft²

Curved surface area of the hemisphere = 2 \pi r^2

                                                                  = 2\times 3.14 \times 1^2

                                                                  = 6.28  ft²

Curved surface area of the hemisphere = 6.28  ft²

Surface area of the trash = CSA of cylinder + CSA of hemisphere

                                           = 18.84 ft² + 6.28 ft²

                                           = 25.12 ft²

The surface area of the trash can = 25.12 ft²

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