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Bunuel
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The number of meters in AB is equal to the square root of the number 07 May 2021, 04:15
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61% (01:32) correct 39% (01:32) wrong based on 118 sessions

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The number of meters in AB is equal to the square root of the number of centimeters in AB. What is the length of AB (1 meter=100 centimeters)?

(A) 100 meters
(B) 10 meters
(C) 100 centimeters
(D) 10 centimeter
(E) 1 centimeter
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Bunuel
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The number of meters in AB is equal to the square root of the number 08 May 2021, 08:15
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Bunuel
The number of meters in AB is equal to the square root of the number of centimeters in AB. What is the length of AB (1 meter=100 centimeters)?

(A) 100 meters
(B) 10 meters
(C) 100 centimeters
(D) 10 centimeter
(E) 1 centimeter
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I'd plug in the options for this question.

Check option A: if the number of meters in AB is 100, then the number of centimeters is 100*100. The square root of 100*100 is 100: 100 = 100.

Answer: A.

Check other Conversion problems to practice in Special Questions Directory.

Hope it helps.
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The number of meters in AB is equal to the square root of the number 07 May 2021, 04:21
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Let x be number of centimeters



1 meter = 100 centimeter


x^0.5*100=X
100=x^0.5
x=10,000cm=100m

A

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The number of meters in AB is equal to the square root of the number 08 May 2021, 09:01
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I always like to start from the answer choices in these tricky types of unit conversion questions.

The length of AB remains the same - it is only the units with which we measure AB that changes.

We are looking for:

(# of meters) = sqrt(# of centimeters)

M = sqrt(C)

“1 meters equals 100 cm”

(100)M = C

(E) 1 cm

100 cm ———————> 1 m

/100 ................................./100

1 cm ———————> 1/100 m

Does: 1/100 meters = sqrt(1) ?

No

(D) 10 cm

100 cm —————————> 1 m

/10............................................./10

10 cm ——————————> 1/10 m

Does: 1/10 meters = sqrt(10) ?

NO

You can continue the same analysis for C and B. Of course max lucky enough if you start with A

(A) 100 m

1 m —————-> 100 cm
*(100).................... *(100)

100 m ——————-> 100,000 cm

Does: 100 meters = sqrt(100,000) ?


YES
100 = (10)^2

100,000 = (10)^4

Square Root of (10)^4 = (10)^2 = 100

(A) is the answer
100 m

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