The area of the rectangle of the room is 17.76 square meters. The length of one wall is 4.8 m.
| January 4, 2021 | education
The area of the rectangle of the room is 17.76 square meters. The length of one wall is 4.8 m. Find the length of the other wall of the room. What is the speed of the train if it traveled 45.6 km in 0.6 hours?
a) area of the rectangle = length * width
We know the area and the side, we present:
17.76m ^ 2 = 4.8m * x
x = 3.7 m
Answer: the second side is 3.7 m.
b) distance = speed * time
We know the time and distance, we substitute:
45.6 km = 0.6h * x
x = 76 km / h
Answer: train speed is 76 km / h.
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