Solve the Problem $28 \mathrm { ft }$ And the Vertical Clearance Must Be

question 89

Multiple Choice

Solve the problem.
-A railroad tunnel is shaped like a semiellipse. The height of the tunnel at the center is $28 \mathrm { ft }$ and the vertical clearance must be $26 \mathrm { ft }$ at a point $18 \mathrm { ft }$ from the center. Find an equation for the ellipse.

• A) \(\frac { x ^ { 2 } } { 2352 } + \frac { y ^ { 2 } } { 676 } = 1\)
• B) \(\frac { x ^ { 2 } } { 784 } + \frac { y ^ { 2 } } { 2352 } = 1\)
• C) \(\frac { x ^ { 2 } } { 324 } + \frac { y ^ { 2 } } { 784 } = 1\)
• D) \(\frac { x ^ { 2 } } { 2352 } + \frac { y ^ { 2 } } { 784 } = 1\)

---

Definitions:

Selling Price

The amount a customer pays to purchase a product or service.

Value-based Pricing

Pricing strategy where the price is based on the perceived value of a product or service to the customer rather than the cost of production.

Industrial Grinder

A machine tool used in manufacturing for grinding, which is a process of removing material using abrasion.

Preventive Maintenance

Routine maintenance and servicing of equipment to prevent unexpected breakdowns and failures.