Calculate the length of the bold arc

length of arc is 44 cm.

Step-by-step explanation:

The formula for determining the length of an arc is expressed as

Length of arc = θ/360 × 2πr

Where

θ represents the central angle.

r represents the radius of the circle.

π is a constant whose value is 3.14

From the information given,

Radius, r = 8 cm

Angle subtended by the bold arc,θ = 315 degrees

Therefore,

Length of arc = 315/360 × 2 × 3.14 × 8

Length of arc = 44 cm rounded up the nearest whole number.

the answer is:

the correct option is the option b.

to calculate the surface area of the right cylinder, we need to use the following formula:

from the picture we know that:

so, substituting and calculting we have:

hence, we have that the correct option is the option b.

have a nice day!