Can I get some help please? Thanks!

Mathematics

1 answer:

AlladinOne [14]3 years ago

6 0

Okay. So we are talking about going down 4 units and going to the left 5 units. When we go down, we subtract outside of the parenthesis. D is out, because we go down, not up. C is eliminated, because that is not the amount we are going down. When it comes to horizontal transitions, adding means we move to the left, subtracting means we move to the right. In this case, we move to the left 5 units, so we add 5 inside the parenthesis. That also eliminates A. The only answer that works is B. The answer is B.

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(b) The globe has a radius of 28.5 cm. Find the surface area of the globe. Round your answer to two decimal places. Use:

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Answer:

$\boxed {\boxed {\sf 10,207.03 \ cm^2}}$

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Surface area is the total area of the surface of an object. A globe is a sphere and the formula for calculating a sphere's surface area is:

$SA= 4 \pi r^2$

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Multiply 4, pi and 812.25 centimeters together.

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Round to two decimal place or the hundredth place. The 4 in the thousandth place to the right (10207.03453) tells us to leave the 3 in the hundredth place (10207.0<u>3</u>453).

$SA \approx 10207.03 \ cm^2$