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3 years ago

HELP ASAP

Mathematics

1 answer:

nexus9112 [7]3 years ago

5 0

Answer:

The answer is C.) 14

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HELP ME PLS Which of these figures has rotational symmetry?

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When you rotate the shape it will be the same as it was before .

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Which inequality represents the graph below? Is it 1, 2, 3, or 4?

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a closed dot stands for greater than/less than or equal to and the graph says that r is greater than 2.5

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3 years ago

(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:

damaskus [11]

Answer:

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

Step-by-step explanation:

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:

$SA= 4 \pi r^2$

The radius (r) of the globe is 28.5 centimeters. Substitute this value into the formula.

r= 28.5 cm

$SA= 4 \pi ( 28.5 \ cm)^2$

Solve the exponent. Multiply the number by itself.

(28.5 cm)²= 28.5 cm * 28.5 cm = 812.25 cm²

$SA= 4 \pi (812.25 \ cm^2)$

Multiply 4, pi and 812.25 centimeters together.

$SA= 12.56637061 (812.25 \ cm^2)$

$SA= 10207.03453 \ cm^2$

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 (10207.03453).

$SA \approx 10207.03 \ cm^2$

The surface area of the globe is approximately 10,207.03 centimeters squared.

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Colleen buys a movie for $20 and pays 7% sales tax. Her cousin, Brad, lives in another state. Brad buys the same movie for $22 a

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Colleen pays more. 7% of 20 is 1,40
Brad Pays less as 6% of 22 is 1.32

so a .08 difference

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