What is the approximate volume of this cone? Use 3.14 as your approximation for π. 9 10
1 answer:
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<u>Answer-</u>
Cylinder and Prism have two congruent parallel bases.
<u>Solution-</u>
A. Circle
Circle is a 2 dimensional figure and it has only one base. So this does not have two congruent parallel bases.
B. Cylinder
Cylinder is a 3 dimensional object, where a circular base is extruded. It has two bases one on the top and other on the bottom. They both are parallel to each other.
C. Prism
Prism is a 3 dimensional object, where a triangular or any polygon base is extruded. It has two bases one on the top and other on the bottom. They both are parallel to each other.
D. Cone
A cone has a circular base and a curved surface which gets tapered from the circular base to a point. So this does not have two congruent parallel bases.
F. Pyramid
Pyramid consists of a square or triangular base and sloping sides that meet in a point at the top. So this does not have two congruent parallel bases.
Therefore, from the above options only Cylinder and Prism have two congruent parallel bases.
240 is the answer you're looking for!
Step-by-step explanation:
To find the area, spilt the trapezoid into 3 shapes.
2 triangles (at the ends) and 1 rectangle (the center).
Let's start with the rectangle, the formula for rectangle area is:
The length of the rectangle is 12, the width is 20. Add the numbers in:
Solve:
The area of the rectangle is 240. Now solve for the Triangles.
The formula for finding the area of triangles are is:
The length of the triangle is 12. To find the width subtract 20 from 30.
L = 12, W = 10. Add in the numbers.
Use order of operations to solve, start with parenthesis:
Rember to divide it by 2 because a triangle is half of a rectangle.
Since there are two identical triangles, you don't need to solve for the other
Now, add the areas together:
Then solve:
The correct answer is 240.