A circular plate of radius r feet is submerged vertically in a tank of fluid that weighs w pounds per cubic foot. The center of the circle is ?k?  feet below the surface of the fluid. The fluid force on the surface of the plate is given by . Find the fluid force on the circular plate as shown in the figure given

src="https://sciemce.com/media/2/ppg__cognero__Section_7.7__media__a6417808-b070-4f8d-b2dc-4d9694ecd3d4.PNG" class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_27aba45e1a764acf8624582a8" /> feet and  feet. Round your answer to one decimal place.

?



?



A. 5,489.0 lbs

B. 34,306.2 lbs

C. 6,861.2 lbs

D. 784.1 lbs

E. 2,352.4 lbs

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Answer: A

Mathematics

Solve the problem.The following information on Company X appears in a stock table. Find the closing price for Company X. 

A. $27.85 B. $39.1 C. $21.48 D. $32.59

Write the system in the form  Then solve the linear system by computing  with a calculator. Round numbers to the nearest tenth, as necessary.2.6x - 0.7y + 5.3z - 3.4w = 12.9  6.5y + 0.7w = -1.8  4.0z - 2.2w = 1.54.9x + 0.6w = 3.2

A. (2.2, 1.1, -6.4, -12.4) B. (-2.2, 1.1, -6.4, 23.3) C. (2.2, 1.1, 7.2, 12.4) D. (2.2, -1.1, -6.4, 7.6)

Solve the problem.The following graph shows the educational attainment of residents of a certain town (in black) compared to the state average (in gray). What is the least common education level in the town?

A. Bachelor's degree B. Professional degree C. Master's degree D. Some college, no degree

Use the distributive law to multiply.4(7x + 8)

A. 7x + 32 B. 28x + 32 C. 224x D. 28x + 8