Need need to finish in about an quadrilateral opqr is inscribed inside a circle as shown below. what is the measure of angle r? you must show all work and calculations to receive credit. circle n is shown with an inscribed quadrilateral labeled opqr. o is labeled 2x degrees. p is labeled y degrees. q is labeled 2x plus 4 degrees. r is labeled 3y plus 8 degrees.

∠R = 137°

Step-by-step explanation:

The opposite angles of a quadrilateral are supplementary (equal to 180°).

Since ∠P and ∠R are opposite angles, their sum is 180°

∠P + ∠R = 180°

y + 3y + 8 = 180

4y + 8 = 180

4y = 172

y = 43

∠R = 3y + 8

     = 3(43) + 8

     = 129 + 8

     = 137

your answer is a

step-by-step explanation:

4*4*4*4=256

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: