The Lovell Telescope Is a Radio Telescope Located at the Jodrell

question 19

Multiple Choice

The Lovell Telescope is a radio telescope located at the Jodrell Bank Observatory in Cheshire, England. The dish of the telescope has the shape of a paraboloid with a diameter of 240 feet. The distance from the vertex of the dish to its focus is 85 feet. The surface area of a paraboloid with radius r and depth d is given by . Approximate (to the nearest 100 square feet) the surface area of the radio telescope.

• A)118,900 ft²
• B)63,300 ft²
• C)50,500 ft²
• D)186,500 ft²
• E)50,500 ft².

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