14) Andre went hiking by his house, The first trail he hiked took him 4.5 miles away from his house. The second trail he hiked took him 2.4 miles closer to his house. The third trail
took him 1.7 miles further away from his house. After Andre hiked the three trails, how
far from his house was he?

Answer : 3.8 miles
Step by step explanation :
The calculation is the following :
4.5 miles of the first hike minus 2.4 miles of the second hike
4.5 - 2.4 = 2.1
Then you have to add those 2.1 miles the 1.7 miles of the third and last hike
2.1 + 1.7 = 3.8 miles

SA(surface area)

SA = 2xh + 2pi * r ^ 2

SA = 2pi * (8) * (4) + 2pi * r ^ 2

SA = 2pi * (32) + 2pi * (8 ^ 2)

SA = 2pi * (32) + 2pi * (64)

SA = pi(64) + pi(128)

SA = pi(192)

SA = 603.19 ft ^ 2