Which of the following is the formula for calculating the surface area of a circle?

a. 2(?R2) + 2?R(L)
b. ?R2
c. a2 + b2 = c2
d. none of the above


ANSWER: b

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Rear-wheel drive trucks and vans have independent rear suspension systems.

Answer the following statement true (T) or false (F)

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Three types of screws designed to be driven by a power drill or driver are ____________________

screws, ____________________ screws, and ____________________ screws.

Fill in the blank(s) with the appropriate word(s).

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Why are vegetables blanched before they are frozen?

A) To soft-freeze them prior to hard freezing them B) To extend their freshness by killing bacteria and halting enzyme action C) To reduce the amount of energy required to freeze them D) To produce a bright green color and pleasing appearance

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When a square wave is applied to an integrator op amp, the output is a(n) __________.

A. inverted and amplified square wave B. sawtooth wave C. sine wave

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