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melissadelcid43
05.12.2019 •
Mathematics
Can you me with #39 ? ? explain part b.
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Ответ:
Ответ:
1667 carpets.
Step-by-step explanation:
For this problem we have to find the
area of room,
area of 1 carpet.
Then we have to find how many such carpet's sum will be equal to area of room.
area for rectangle is given by = length * width
area of room = 10 m * 15 m = 150 m. sq.
dimension of carpet = 30 cm * 30 cm
lets converts first 30 cm in meter so that dimension of room and carpet are in same unit that is in meters
100 cm = 1 meter
30 cm = 1/100 * 30 meters = 0.3 meters
area of 1 carpet = 0.3 m * 0.3 m = 0.09 m. sq.
let there be need of x carpet to cover the floor of room.
area of x carpet = area of 1 carpet *x
area of x carpet =0.09x m. sq.
area of x carpet = area of room
0.09x m. sq. = 150 m. sq.
x = 150/0.09 = 1666.67
Thus, there will be need of 1666.67 carpets but carpets cannot be in fraction
hence rounding the number of carpet to nearest whole number.
there will be need of 1667 carpets.