Question

1. For the pair of similar solids, find the value of the variable.
Cylinder 1: r = 15 cm, h = 6 cm
Cylinder 2: r = 5 cm, h = x cm
My answer: D) 2 cm

2. For the pair of similar solids, find the value of the variable.
Pyramid 1: h = 24 mm, b = x mm
Pyramid 2: h = 8 mm, b = 4 mm
My answer - A) 12 mm

3. A rectangular prism has a width of 92 ft and a volume of 240 ft^3. Find the volume of a similar prism with a width of 23 ft. Round to the nearest tenth, if necessary.
My answer - A) 3.8 ft^3

4. A pyramid has a height of 5 in. and a surface area of 90 in^2. Find the surface area of a similar pyramid with a height of 10 in. Round to the nearest tenth, if necessary.
My answer - A) 360 in^2

5. Find the surface area of a sphere with a radius of 12 m.
My answer- B) 804 cm^2

6. Find the surface area of a sphere with a radius of 12 m.
My answer - A) 1,809 m^2

7. Find the volume of the sphere with a radius of 4 ft.
My answer - C) 268 ft^2

^Are my answers correct?

Answer 1

The last 4 are right, however I don't know about the others.

Answer 2

#1-3 are also correct

Answer 3

1. r1/r2 = 15/5 = 3.
h1/h2 = 3,
6/h2 = 3
h2 = 2 cm.

3. W1/W2 = 92/23 = 4.
V1/V2 = 4^3 = 64.
240/V2 = 64,
V2 = 3.8 Ft^3.

Answer 4

Dr. Mathematical = lue

Answer 5

What??? Why would you pretend to be two people?

Answer 6

#5 and 6 are the same question

#6 is correct
I worked #5 backwards, it is correct if r = 8