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Digiron [165]
3 years ago
6

A glass dome for a lighting fixture is in the shape of a hemisphere. The circumference of the great circle of the hemisphere is

12π inches. Which statements about the hemisphere are true? Check all that apply.
The radius is 6 inches.
The total surface area is 108π square inches.
The radius is 12 inches.
The total surface area is 144π square inches.
The total surface area is 432π square inches.
The total surface area is 36π square inches.
Mathematics
1 answer:
Alona [7]3 years ago
4 0

Answer:

A and B

Step-by-step explanation:

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Match the solid figure to the appropriate formula.
AlekseyPX

1. L \cdot A=\pi r l        -       Cone

2. V=\frac{4}{3} \pi r^{3}         -        Sphere

3. T \cdot A=2 \pi r h+2 \pi r^{2} - Cylinder

4. V=\frac{1}{3} B h         -        Pyramid

5. L . A=p h         -        Prism

Solution:

1. L \cdot A=\pi r l

Lateral surface area of cone = \pi r l

where r is the radius of the cone and l is the slant height of the cone.

2. V=\frac{4}{3} \pi r^{3}

Volume of sphere = \frac{4}{3} \pi r^{3}

where r is the radius of the sphere.

3. T \cdot A=2 \pi r h+2 \pi r^{2}

Total surface area of cylinder = 2 \pi r h+2 \pi r^{2}

where r is the radius of the cylinder and h is the height of the cylinder.

4. V=\frac{1}{3} B h

Volume of pyramid = \frac{1}{3} B h

where B is the base area of the pyramid and h is the height of the pyramid.

5. L . A=p h

Lateral surface area of prism = p h

where p is the perimeter of the base and h is the height of the prism.

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37,975 dollars altogher
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Which is an expression to find the speed in m/s? d = 40 meters, t = 10 seconds
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