A certain lot has an area of 12*10^(-7) square kilometers. What

Question

A certain lot has an area of  12*10^{-7}  square kilometers. What is the area of the lot in square meters? (1 kilometer = 1,000 meters)

A. 0.12
B. 1.2
C. 12
D. 120
E. 1,200

Bunuel · Accepted Answer

Official Solution:

A certain lot has an area of  12*10^{-7}  square kilometers. What is the area of the lot in square meters? (1 kilometer = 1,000 meters)

A. 0.12
B. 1.2
C. 12
D. 120
E. 1,200

1 square kilometer = 1,000 meters * 1,000 meters =  10^6  square meters.

Thus,  12*10^{-7}  square kilometers equals  12*10^{-7}*10^6 = 12*10^{-1} = 1.2  square meters.

Answer: B

imeanup · Answer

12 	imes 10^{-7} 	ext{Km}^2 	o 	ext{m}^2 = 12 	imes 10^{-7} 	imes (10^3)^2 = 12 	imes 10^{-1} = 1.2 	ext{ m}^2.

B

Abhishek009 · Answer

1  Km =  10^3  m

So,  1  Km ^2  =  10^6  m ^2

Thus,  12*10^{-7}  square kilometers =  12*10^{-7}*10^6 = 1.2  square Meters, Answer will be (B)

poojaarora1818 · Answer

1 Km                               = 1000m
1sq km                            = 1000000 sq. meters
So, 12/10000000 sq km     = 1.2 square meters

Option B

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