3 years ago

What is the surface area of a rectangular prism that is 8 centimeters by 6 centimeters by 24 centimeters?

1 answer:

5 0

One formula for the surface area (S) of a prism is
S = 2(LW + H(L+W))

Filling in the given values, you have
S = 2((8 cm)·(6 cm) + (24 cm)·(8 cm + 6 cm))
= 2(48 cm² + (24 cm)·(14 cm))
= 2·384 cm²
= 768 cm²

The surface area is 768 cm².

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Simplify the linear expression

vekshin1

Answer:

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Step-by-step explanation:

This question utilizes combining like terms and common denominators. First you have to convert both terms including "a" to have a denominator of 8. You would do this by multiplying both the numerator, and the denominator by the same value. This value in the case of $-\frac{1}{4} a$ would be 2, and in the case of $\frac{2}{3}$ the value would be 2. This would result in the equation: $-\frac{5}{8}a+\frac{4}{6}-\frac{2}{8}a-\frac{5}{6}$ . Then simply combine like terms to get your final answer.