missalawode28
06.05.2020 •
Mathematics
Question 2
1 point
2. A square pyramid and a cube have the same total surface area. The
width of the cube is 8 centimeters. The base of the pyramid is equal to
base of the cube. What is the slant height of the square pyramid?
O
a, 384 cm
b. 20 cm
c. 10 cm
O
d. 80 cm
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Ответ:
Step-by-step explanation:
Both of them finish in an hour 1/2 of the job.
Bert finishes 1/3 of the job in an hour.
So Ernie can do in an hour 1/2-1/3=1/6 of the job.
This way we understand that Ernie needs 6 hours to finish the job.