Dave is going to leave academia and go into business building grain silos. A grain silo is a cylinder with a hemispherical top, used to store grain for farm animals. Here is a 3D view, a cross-section, and the top view.

If Dave is standing next to a silo of cross-sectional radius r = 11 feet at the indicated position, his vision will be partially obstructed. Find the portion of the y-axis that Dave cannot see. (Hint: Let a be the x-coordinate of the point where line of sight #1 is tangent to the silo; compute the slope of the line using two points (the tangent point and (12, 0)). On the other hand, compute the slope of line of sight #1 by noting it is perpendicular to a radial line through the tangency point. Set these two calculations of the slope equal and solve for a. Enter your answer using interval notation. Round your answer to three decimal places.)

  1. 👍 0
  2. 👎 0
  3. 👁 709

Respond to this Question

First Name

Your Response

Similar Questions

  1. ancient egypt and kush practice

    which of the following was the trade good Meroë became famous for? gold iron wood grain***

  2. Social Studies

    Why were Kushites so eager to trade their gold for Egypt's grain? A. They did not have enough land to farm and needed food more than gold.** B. They worshiped grain as a god and so preferred it more than gold. C. They were afraid

  3. math

    The production of rice in the year 2001 was 1000 tonnes which was 25% of the total food grain production in that year. In the next year if the production of rice decreased by 4% and production of rice as a percentage of total food

  4. calc

    Nutrition Ruff, Inc. makes dog food out of chicken and grain. Chicken has 10 grams of protein and 5 grams of fat per ounce, and grain has 2 grams of protein and 2 grams of fat per ounce. A bag of dog food must contain at least 224

  1. Social Studies

    Why were Kushites so eager to trade their gold for Egypt's grain? \ -PLS HELP THIS IS FOR THE SS QUIZ FOR CONNEXUS....

  2. STAT

    Grain is fortified with vitamins at the factory when processed. But, before the product reaches the consumer, some of the vitamins may degrade due to time, heat during storage, etc. Suppose the vitamin contents (in milligrams per

  3. math

    The width of a grain of sugar is 0.7 millimeter. What will be the width of the grain of sugar in centimeters under magnification? centimeters

  4. Math

    A farmer uses a conveyor belt to move grain from ground level into a storage silo. The conveyor has a length of 9 metres. Its angle of elevation can be adjusted from 5° to 20°. The silo has an opening that can accommodate the

  1. Math

    A round silo is 40 feet tall and has a 25 foot radius. How high would a load of 37000 cubic feet of grain fill the silo? Express your answer rounded to the nearest foot.

  2. math 123

    a round silo is 60 ft tall and has a 18 ft radius. how high would a load of 32000 cubic ft of the grain fill

  3. math

    find the surface area of a Cylindrical grain silo with hemispherical top height=71 diamatere=62

  4. math

    The circumference (C) of the base of a grain silo is 160 feet. To the nearest tenth, what is the radius (r) of the silo? (C = 2πr) A) 18.5 feet Eliminate B) 25.5 feet C) 50.9 feet D) 64.8 feet PLSSSSSSS HELP

You can view more similar questions or ask a new question.