Mathematics Form 2 Circle -2
-
Figure shows distance from P to Q is 12cm. the radius is 40cm. Find ° x. Use π = 3.142
-
20°
-
17.19°
-
32.42°
-
23°
-
This Mathematics Form 2 quiz on circles challenges students with problems involving angles, arc lengths, circumference, and areas related to circles. Key skills assessed include understanding and application of circle geometry formulas, enhancing computational and problem-solving abilities relevant to geometry.
Quiz Preview
- 2.
Figure shows a pizza with diameter 20cm. The pizza is cut into 8 equal pieces. Find the length of arc for each pieces. Use π = 3.142
-
8.56 cm
-
10.11cm
-
14.3 cm
-
7.855 cm
Correct Answer
A. 7.855 cmExplanation
45 /360 * 2 (3.142) (20/2) = 7.855cmRate this question:
-
- 3.
The area of colored sector is 1732.5 cm ². Find circumference of the circle. Use π = 22/7
-
31.5 cm
-
96 cm
-
124.64 cm
-
89.5 cm
Correct Answer
A. 31.5 cmExplanation
angle of centre = 360 - 160 = 200
angle of centre / 360 = area of sector /area of circleRate this question:
-
- 4.
Use π =3.142. Find circumference of circle with diameter 10cm. The answer isUse � =22—7Use � =22—7
Correct Answer
31.42cm, 31.4cm,31.42,31.4Explanation
2pi r, 2pi dRate this question:
- 5.
We use the formulae πr2 to calculate circumference of a circle.
-
True
-
False
Correct Answer
A. FalseExplanation
πr² for area of circle.Rate this question:
-
- 6.
Calculate the radius and the circumference of a circle with area 3160 cm². Use π = 3.142
-
31.72cm, 178.5cm
-
31.72cm, 199.3cm
-
40.65cm,199.3cm
-
50.90cm, 144.4cm
Correct Answer
A. 31.72cm, 199.3cmExplanation
r=Squareroot(A /π)
π=3160 π≈31.71528
C=2πr=2*π*31.72 ≈ 199.30264Rate this question:
-
- 7.
Calculate the radius and the area of a circle with circumference 24.43 cm. Use π = 3.142
-
4.44cm, 51,5 cm²
-
3.89cm, 47.54cm²
-
3.89cm, 60 cm²
-
4.44cm, 57.65 cm²
Correct Answer
A. 3.89cm, 47.54cm²Explanation
r=C/2π
=24.43/2*π ≈ 3.89
A=πr2=π*3.89 ≈ 47.53889Rate this question:
-
- 8.
From the answer below, which is TRUE about sector.
-
The part of a circle enclosed by two radii of a circle and their intercepted arc.
-
A portion of the circumference of a circle.
-
The distance across a circle through its center.
-
A straight line segment whose endpoints both lie on the circle
Correct Answer
A. A straight line segment whose endpoints both lie on the circleExplanation
This answer is not true about a sector. A sector is actually the part of a circle enclosed by two radii of a circle and their intercepted arc.Rate this question:
-
- 9.
Calculate the radius and the diameter of a circle with area 202.25 cm ². Use π = 3.142 Match the correct answers.
-
11cm, 22cm
-
9.36cm, 19.25cm
-
8.02cm, 16.4cm
-
13.4cm, 26.8cm
Correct Answer
A. 8.02cm, 16.4cmExplanation
The formula to calculate the area of a circle is A = πr^2, where A is the area and r is the radius. In this case, the area is given as 202.25 cm^2. By rearranging the formula, we can solve for the radius.
202.25 = 3.142 * r^2
Dividing both sides by 3.142, we get:
r^2 = 64.5
Taking the square root of both sides, we find:
r = 8.02 cm
The diameter of a circle is twice the radius, so:
d = 2 * r = 2 * 8.02 = 16.04 cm
Therefore, the correct answer is 8.02 cm for the radius and 16.04 cm for the diameter.Rate this question:
-
- 10.
X is straight line segment that passes through the center of the circle and whose endpoints lie on the circle. X is
Correct Answer
diameterExplanation
A diameter is a straight line segment that passes through the center of a circle and whose endpoints lie on the circle. In this case, X is described as a straight line segment that passes through the center of the circle and has its endpoints on the circle. Therefore, X is a diameter of the circle.Rate this question:
Quiz Review Timeline (Updated): Mar 21, 2023 +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
Dec 13, 2016Quiz Created by
Projectmmp
Back to top