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ramberson101
03.07.2019 •
Mathematics
Apatio floor is shaped like a rectangle with a width of w cm and a length of 21 ft. find an expression that represents the area of the floor.
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Ответ:
Note that
1 in = 2.54 cm
1 cm = 1/2.54 = 0.3937 in
1 cm = 0.3937/12 = 0.032808 ft
w cm = w*0.032808 = 0.032808w ft
Therefore the area of the floor is
(21 ft)*(21 cm)
= (21 ft x 0.032808w ft)
= 0.689w ft²
0.689w ft² (nearest hundredth)
Ответ:
B.
Step-by-step explanation: