Sasha is becoming a stronger runner. Last year she ran five miles in 50 minutes. This year her timing improved by 20%. How long does it take her to run five miles?

40 minutes

Step-by-step explanation:

Last year she ran five miles in 50 minutes

This year her timing improved by 20%. This means she runs 5 miles in 20% less time than last year

How long does it take her to run five miles?

= 50 minutes - 20% of 50 minutes

= 50 minutes - 20/100 * 50 minutes

= 50 minutes - 0.2 * 50 minutes

= 50 minutes - 10 minutes

= 40 minutes

This year, it takes her 40 minutes to run 5 miles

244.92ft^2

Step-by-step explanation:

Given the following :

Height (h) of fence post = 6

Diameter = 1 foot

Using the total surface area of a cylinder relation:

2πrh + 2πr^2

2π(rh + r^2)

Where r = radius, π =3.14

r = diameter /2 = 1/2 = 0.5

2 * 3.14(rh + r^2)

6.28((0.5*6) + (0.5)^2)

6.28(3 + 0.25)

6.28(3.25)

= 20.41 ft^2

Therefore, to paint 12 fence posts :

12 * 20.41ft^2 = 244.92ft^2

244.92ft^2