The first step is to calculate the radius of the cylinder, which is half of the diameter.
Radius = 30 inches / 2 = 15 inches
Next, we convert the length from feet to inches:
15 feet x 12 inches/foot = 180 inches
Now we can calculate the surface area of the cylinder using the formula:
Surface Area = 2πr^2 + 2πrh
Surface Area = 2 * 3.14 * (15 inches)^2 + 2 * 3.14 * 15 inches * 180 inches
Surface Area = 2 * 3.14 * 225 square inches + 2 * 3.14 * 2700 square inches
Surface Area = 1413 + 16956
Surface Area = 18369 square inches
Therefore, the surface area of the tree trunk is 18369 square inches, which is closest to 2,826.
Sonia cut a tree trunk in the shape of a cylinder. The length is 15 feet and the diameter is 30 inches solve the surface area using 3.14 for pi.
127.56
2,826
274.75
117.75
1 answer
1 answer