What is the radius of the circle if the angle of sector is 90° and the area of the circle is 196 cm2?
Answers
Answered by
0
Explanation:
34 is the correct answer
Answered by
0
Answer:
15.77cm
Explanation:
9:17
Explanation:
The diameter of the shaded area is the same as the height of the rectangular area: 30cm
The relationship between the radius and diameter of a circle is: d
d = 2r or r =
Substituting the diameter gives the radius as: 30cm 2 T = 15cm
The RADIUS of the shaded area is: 15cm
The formula for the area of a circle is:
Ac пр2
Substituting the radius from above and calculating the area gives:
Ac (15cm)²
Ac = π · 225cm²
Ac
225cm²
Or, using 3.14 to approximate ™T:
Ac 225 3.14cm²
Ac≈ 706.5cm²
The AREA of the shaded area is approximately 706.5 square centimeters
Similar questions