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Brut [27]
3 years ago
9

Composite figures are two or more figures combined. When finding the surface area, you cannot simply find the separate surface a

reas and add them. What face(s) do you have to exclude from the total surface area? Explain.
Mathematics
2 answers:
tester [92]3 years ago
7 0

Step-by-step explanation:

You must exclude any intersecting faces (faces that are shared), because these faces are not on the surface.

For example, an ice cream cone can be approximated as a composite figure of a hemisphere on top of a cone.  The circular base of the hemisphere and the circular base of the cone are intersecting, so you must exclude it when finding the surface area.

sveta [45]3 years ago
6 0

Answer:When two figures are placed together, one of each of their surfaces meets. The surfaces come together on the inside of the figure, and are no longer a part of the surface. These surfaces are a part of the individual figures’ surface area, but not of

Step-by-step explanation:

Did the test (this is the sample response)

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If 3,000 bacteria, with a growth constant (k) of 2.8 per hour, are present at the beginning of an experiment, in how many hours
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Given:

Initial number of bacteria = 3000

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The number of hours it will take to be 15,000 bacteria.

Solution:

Let P(t) be the number of bacteria after t number of hours.

The exponential growth model (continuously) is:

P(t)=P_0e^{kt}

Where, P_0 is the initial value, k is the growth constant and t is the number of years.

Putting P(t)=15000,P_0=3000, k=2.8 in the above formula, we get

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\ln 5=\ln e^{2.8t}

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\dfrac{1.609438}{2.8}=t

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