A man has 14 coins in his pocket, all of which are dimes and quarters. if the total value of his change is $1.70, how many dimes
1 answer:
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Answer:
The total surface area of triangular pyramid is 172 cm squared
Step-by-step explanation:
Triangular pyramid:
- Number of faces 4.
- Number of vertices of a triangular pyramid is 6.
- The volume is
. A= area of the pyramid's base and H= height of the pyramid.
- The surface area of triangular pyramid B+L. B= area of base, L= area of lateral surface.
Given that, the area of the base is 43 cm squared. Lateral faces with bases of 10 cm and heights 8.6 cm.
The 3 sides of the triangular pyramid is triangle in shape.
The area of triangle is .
The lateral surface area of the triangular pyramid is
cm squared
=129 cm squared
The total surface area of triangular pyramid is
=Area of the base + lateral surface area
=(43+129) cm squared
=172 cm squared
<u>Given</u>:
A cylindrical tank has a height of 10 feet.
The radius of the cylindrical tank is 4 feet.
Jane fills the tank with water at a rate of 8 cubic feet per minute.
We need to determine the time it will take for Jane to completely fill the tank without overflowing it.
<u>Volume of the cylinder:</u>
The volume of the cylinder can be determined using the formula,
Substituting the values, we have;
Thus, the volume of the cylinder is 502.4 cubic feet.
<u>Time taken:</u>
The time taken can be determined using the formula,
Substituting the values, we have;
Thus, Jane takes 62.8 minutes to completely fill the tank without overflowing it.