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3 years ago

Which of the following best describes the surface area of a solid figure?

Mathematics

2 answers:

grandymaker [24]3 years ago

4 0

Assuming the figure has identifiable bases and sides, the total surface area is the sum of the areas of those:

... B. Base area + lateral area

beks73 [17]3 years ago

4 0

The surface area of any object is the sum of all areas on the object itself, and thus it cannot be D. This would include both the base area and the lateral areas. And thus the correct answer would be B.

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3 years ago

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3 years ago

Find the value of x.round to the nearest tenth

Nata [24]

Answer:

$\displaystyle x \approx 8.2$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Equality Properties

Multiplication Property of Equality
Division Property of Equality
Addition Property of Equality
Subtraction Property of Equality

Trigonometry

[Right Triangles Only] SOHCAHTOA

[Right Triangles Only] sinθ = opposite over hypotenuse

Step-by-step explanation:

Step 1: Identify Variables

Angle θ = 23°

Opposite Leg = x

Hypotenuse = 21

Step 2: Solve for x

Substitute in variables [sine]: $\displaystyle sin(23^\circ) = \frac{x}{21}$
[Multiplication Property of Equality] Isolate x: $\displaystyle 21sin(23^\circ) = x$
Rewrite: $\displaystyle x = 21sin(23^\circ)$
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Answer:

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2 years ago