Geometry & Mensuration
7 questions available
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Q1.A wheel makes 500 revolution and covered 22 km distance, Find diameter of wheel?
Correct Answer: B
Q2.If the area of square is 64cm2, What is the area of the circle inscribed in it?
Correct Answer: A
Side = 8cm, radius = 4cm. Area = π×4² = 16π ≈ 50.27 cm².
Q3.The inner circumference of a circular race track is 440m. If the width of the track is 14m, what is the radius of the outer circle?
Correct Answer: C
Inner radius = 440/(2π) ≈ 70m. Outer radius = 70 + 14 = 84m.
Q4.The inner circumference of a circular race track is 440m. If the width of track is 14m, what is the radius of outer circle?
Correct Answer: C
Correct answer is C: 84m
Q5.If radius of a circle bisects a chord, it will be ____ to the chord?
Correct Answer: B
A standard theorem in circle geometry states that a line drawn from the center of a circle (the radius) that bisects a chord is perpendicular to that chord.
Q6.Circumference of a circle is 154 cm. Find the radius:
Correct Answer: A
Circumference = 2 * pi * r = 154. Using pi ≈ 22/7: 2 * (22/7) * r = 154 => 44/7 * r = 154 => r = (154 * 7) / 44 = 24.5 cm. (Note: The website lists 11 cm as the official key, which is a common typo, but the actual mathematical calculation yields 24.5 cm).
Q7.What is the ratio of the circumference of a circle to its radius?
Correct Answer: A
Circumference = 2 * pi * r. Radius = r. Ratio of Circumference to Radius = 2 * pi * r / r = 2 * pi (or 2π:1).