On a trip to Paris, Franco visits the Eiffel tower at 6:44 P.M. The Eiffel tower is 986 feet tall and Franco is 6 feet tall. Fra
1 answer:
Answer:
Option D is correct.
Step-by-step explanation:
It is given that 6 feet tall casts shadow for 38 feet long.
We need to find the shadow f 986 ft tall Eiffel tower.
Let's set up proportional equation to solve. Let the shadow length as 'x' feet for the tower.
Cross multiply,
6 x= 37468
Divide both sides by 6.
x= 6244.67 feet approximately.
If we round it to nearest feet, we get 6245 feet.
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Answer:
5000 particles of size 10 nanometer should be stacked
Step-by-step explanation:
Average diameter of the of the human hair = 50 micron = 50 × 10⁻⁶ m
Now,
let the number of 10 nanometer i.e 10 × 10⁻⁹ m particle be 'n'
thus,
n × 10 × 10⁻⁹ m = 50 × 10⁻⁶ m
Therefore to find the number of 10 nanometer i.e 10 × 10⁻⁹ m particle,
n =
or
n = 5000
Hence,
5000 particles of size 10 nanometer should be stacked