Kenisha uses the Fermi process to estimate the number of dollar bills that would cover her driveway. Her driveway is rectangular
in shape.
She estimates a dollar bill to be about 6 in. long and 3 in. wide.
She estimates her driveway to be about 30 ft long and 20 ft wide.
Which expression should Kenisha use in the process?
9×10^4/2×10^2
6×10^2/2×10^1
6×10^2/2×10^2
9×10^4/2×10^1
She estimates a dollar bill to be about 6 in. long and 3 in. wide.
She estimates her driveway to be about 30 ft long and 20 ft wide.
Which expression should Kenisha use in the process?
9×10^4/2×10^2
6×10^2/2×10^1
6×10^2/2×10^2
9×10^4/2×10^1
2 answers:
Answer:
option A
9×10^4/2×10^2
Step-by-step explanation:
Given in the question,
length of dollar bill = 6
width of dollar bill = 3
area of dollar bill = L x W
= 6 x 3
= 18inches²
length of driveway = 30
width of driveway = 20
area of driveway = L x W
= 30 x 20
= 600 ft²
1 ft² = 144 inches²
600 ft² = 86400 inches²
Number of dollar bills that would cover Kenisha driveway = 86400 / 18
Which can also be written as
86400 = 9 x 10
18 = 2 x 10²
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