Answer:
or
Step-by-step explanation:
step 1
Find the radius of the circular base of the cone
The volume of the cone is equal to
we have
substitute
simplify pi
step 2
Find the volume of the hemisphere
The volume is equal to
we have
----> is the same that the radius of the cone
substitute
step 3
Find the volume of the solid shape
we know that
The volume of the solid shape is equal to the volume of a cone plus the volume of a hemisphere
so
Convert to mixed number
-5 because the variable is x and a coefficient comes before the variable.
Hope this helps!
1) The sculptor created a marble basin with an approximate volume of 94,509.6 cubic centimeters - Option D, 2) The approximate area of the heart-shaped cake is 283 square inches - Option B, 3) The length of the wooden frame around the window is 94.3 inches - Option B.
In this question we should make use of geometric formulas for volumes and areas and key information from statement in order to find the right choices.
1) In this case, the volume occupied by the marble water basin (), in cubic centimeters, by subtracting the volume of the hemisphere from the volume of the cylinder:
(1)
Where:
- - Radius of the cylinder, in centimeters.
- - Height of the cylinder, in centimeters.
- - Radius of the cylinder, in centimeters.
If we know that , and , then the volume of the marble is:
The right choice is D.
2) To determine the approximate surface area of the cake covered in red frosting (), in square inches, we need to find the sum of the surface area of the entire circle and the surface area of the square:
(2)
Where:
- - Side length of the square, in inches.
- - Height of the cakes, in inches.
- - Diameter of the cakes, in inches.
If we know that , and , then the <em>approximate</em> area covered in red frosting:
The right choice is B.
3) The frame around the window is found by means of the following perimeter formula (), in inches:
(3)
Where:
- - Radius, in inches.
- - Height of the rectangle, in inches.
If we know that and , then the length of the frame around the window is:
The right choice is B.
We kindly invite to see question on volumes: brainly.com/question/1578538
Answer:
Option B is correct.
Step-by-step explanation:
Given
R = {-1, 0, 1, 2, 4, 5}
S = {4, 5, 6}
To determine
R ∩ S = ?
The intersection of two given sets R and S is the largest set which consists of all the elements that are common to both sets.
Thus, we conclude that:
R = {-1, 0, 1, 2, 4, 5}
S = {4, 5, 6}
The intersection of two given sets R and S:
R ∩ S = {4, 5}
Hence, option B is correct.