In circle P, diameter QS measures 20 centimeters. Circle P is shown. Line segment Q S is a diameter. Line segment R P is a radius. Angle R P S is 123 degrees. What is the approximate length of arc QR? Round to the nearest tenth of a centimeter. 9.9 centimeters 19.9 centimeters 21.5 centimeters 43.0 centimeters

Length of arc QR is 9.9 cm

Step-by-step explanation:

Given that circle P, i.e. center is point P.

QS is diameter with length 20 cm.

Given that RP is the radius with

To find length of arc QR = ?

Solution:

Arc QR subtends the on center P.

So, we need to find the angle to find the length of arc QR.

QS is the diameter so

Converting in radians,

Using the formula for length of arc:

Where is the angle subtended by the arc on center.

R is the radius of circle.

Here,

Length of arc QR is 9.9 cm

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere

eve and marks ratios are equivalent

step-by-step explanation: