Question

Can someone help me urgent i will mark Brainliest ​

Answer 1

Answer:

a. The distance around the circular region is called its circumference. The ratio of circumference of any circle to its diameter is constant. This constant is denoted by π and is read as pie.

Circumference/Diameter = Pie

i.e., c/d = π or c = πd

We know that diameter is twice the radius, i.e., d = 2r

C = π × 2r

⇒ C = 2πr

Therefore approximate value of π = 22/7 or 3.14.

Step-by-step explanation:

b.Given , PQ = QR

Thus, ∠QPR=∠PRQ=x (Isosceles triangle Property)

Sum of angles of triangle = 180

∠PQR+∠PRQ+∠QPR = 180

80+x+x=180

2x=100

x=50

∘

∠R=50

∘

Answer 2

Answer:

Here is your answer

Mark as brainliest..