70 m
A farmer has a field in the shape of a semicircle.
A sketch of the field is shown.
The farmer asks a builder to raise a fence around
the edge of the field. He gets the following quotation.
Total cost = £32.65 per metre of fence + £150 for each day's work
The builder estimates that it will take five days to build the fence.
Work out the total cost.
70 x £32.65 = £2,285.5
£150 x 5 =£ 750
£2,285.5 + £750 = 3035.50
Total Cost = £ 6623.74
Step-by-step explanation:
We can see that the field is in the same of a semicircle, which has a base of 70 meter.
We need to calculate the perimeter of semicircle.
Consider it as a circle which has a diameter of 70m.
Radius = 70/2 = 35 meter
Perimeter of circle is given by = 2πr
Perimeter of circle is given by = 2π(35)
Perimeter of circle = 219.8 meters
Perimeter of the semicircle = 219.8/2
Perimeter of the semicircle = 109.9 meters
This is just the perimeter around the globe of semicircle. The base of semicircle is not included in this.
Total Perimeter = 109.9 + 70
Total Perimeter = 179.9 meters
Total Cost = 32.65 (Total perimeter) + 150 (Number of days)
Total Cost = 32.65 (179.9) + 150 (5)
Total Cost = £ 6623.74
..
step-by-step explanation:
his chances of getting a coin of higher value is 4/19
step-by-step explanation:
A sketch of the field is shown.
T...