Figure (A) Shows a Vacant Lot with a 80-Ft Frontage

question 67

Short Answer

Figure (a) shows a vacant lot with a 80-ft frontage in a development. To estimate its area, we introduce a coordinate system so that the x-axis coincides with the edge of the straight road forming the lower boundary of the property, as shown in Figure (b). Then, thinking of the upper boundary of the property as the graph of a continuous function f over the interval [0, 80], we see that the problem is mathematically equivalent to that of finding the area under the graph of f on [0, 80]. To estimate the area of the lot using a Riemann sum, we divide the interval [0, 80] into four equal subintervals of length 20 ft. Then, using surveyor's equipment, we measure the distance from the midpoint of each of these subintervals to the upper boundary of the property. These measurements give the values of f(x) at x = 10, 30, 50, and 70. What is the approximate area of the lot? __________ square feet

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Definitions:

Evil Scientist

A fictional or stereotypical portrayal of a scientist who uses their knowledge for harmful or immoral purposes.

Supervillains

Fictional characters that present a significant challenge to heroes in works of fiction, often characterized by their malevolent intentions and actions.

Thalamus

A structure in the brain that acts as a relay station, processing and transmitting information to various parts of the brain.

Pleasure Centres

Areas of the brain, notably within the limbic system, that are believed to be responsible for the sensation of pleasure elicited by certain activities or substances.