A Building in the Shape of a Rectangular Box Is

question 110

Essay

A building in the shape of a rectangular box is to have a volume of (see the figure). It is estimated that the annual heating and cooling costs will be $2/square foot for the top, $7/square foot for the front and back, and $6/square foot for the sides. Find the dimensions of the building that will result in a minimal annual heating and cooling cost. What is the minimal annual heating and cooling cost(C)? x = __________
y = __________
z = __________
C = __________

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Definitions:

Ventricles

Lower chambers of the heart that receive blood from the atria and pump it out to the lungs and the rest of the body.

ECG

Electrocardiogram; a diagnostic tool that measures and records the electrical activity of the heart, helping detect heart abnormalities.

QRS Complex

A series of three deflections on an electrocardiogram (ECG) representing the electrical activity during the ventricular contraction phase of the heart cycle.

ECG

Electrocardiogram, a diagnostic tool that records the electrical activity of the heart, used to detect heart conditions by measuring the timing and duration of each electric phase in the heartbeat.