Radius of a wheel = 13 inch
= 1.08333 ft
circumference of a wheel = 2×pi×r^2
= 2 × (22/7) × 1.08333^2 ft
= 2 × (22/7) × 1.1736 ft
= (44/7)×1.1736 ft
= 51.6384/7 ft
= 7.3769142857 ft
distance covered in one minute = 37 × 60 ft/min
= 2220 ft/min
now, revolution per minute = 2220 / 7.3769142857
= 300.93884
therefore her wheels are making 300.93884 revolutions per minute
Red Given:
- Length of base is "6cm50mm"
- length of base= 11cm
- Height is "400mm"
- height= 40 cm
Red Solution:
- Area of triangle =1/2bh
- ar.(triangle)=1/2(11cm)(40cm)
- ar.(triangle)=(11cm)(20 cm)
Orange ar.(Triangle)=220cm^2
This line will land vertically on the -3 line.
Answer:
went up a total of 4 degree at 2 degree a day
