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4 years ago

What is 3 1/3 (-2 1/4) 1 5/6=?

Mathematics

1 answer:

____ [38]4 years ago

7 0

-135.625..............

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The equatorial diameter of a model of earth is 25.6 cm. What is the total surface area of the model

Arisa [49]

Answer:

$2059.7\,\,cm^2$

Step-by-step explanation:

Diameter of a model of earth (D) = 25.6 cm

Radius of a model of earth (r) = $\frac{D}{2}=\frac{25.6}{2}=12.8\,\,cm$

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Total surface area of a sphere = $4\pi r^2$

Put $\pi=\frac{22}{7}\,,\,r=12.8\,\,cm$

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3 years ago