Circle Area Pi

Is pi irrational, rational, both, or neither?

• Both

• Irrational

• Rational

• Neither

• a)
• b)
• c)
• d)

• a

• b

• c

• d

Angle of the sector is 90°then the ratio of Area of circle to area of sector is

• A) 1:4

• B) 1:2

• C) 4:1

• D) 2:3

If the sum of areas of two circles with radii R₁ and R₂ is equal to the area of the circle of radius R then 

• R₁ + R₂ = R

• (R₁)² + (R₂)² = R²

• R₁ + R₂ < R

• (R₁)² + (R₂)²  R²

Area of circle is 154cm², and Area of minor sector is 7.7cm², then calculate area of major sector of circle.

• 145 cm²

• 146.3 cm²

• 77 cm²

• 147 cm²

The area of the circle that can be inscribed in a square of side 6 cm is

• 36pi sq.cm

• 18pi sq.cm

• 12pi sq.cm

• 9pi sq.cm

Find the area of the shaded sector of circle O. The radius is 6 inches and the central angle is 100°. Express answer to the nearest tenth of a square inch.( Use Pi =3.14)

• 25.2 in²

• 28.5 in²

• 31.4 in²

• 38.2 in²

If areas of two circles are equal, then their circumferences are also equal

• TRUE

• FALSE

If the perimeter and the area of a circle are numerically equal, then the radius of the circle is

• A) 2 Units

• B) 4 Units

• C) 3 Units

• D) 7 Units