mensuration Model Questions & Answers, Practice Test for ibps clerk prelims 2024
ibps clerk prelims 2024 SYLLABUS WISE SUBJECTS MCQs
Ratio & Proportion
Percentage
Time & Work
Time & Distance
Mensuration
Trigonometric Ratios & Identities
Consider the following statements
- The locus of points which are equidistant from two parallel lines is a line parallel to both of them and drawn mid way between them.
- The perpendicular distances of any point on this locus line from two original parallel lines are equal. Further, no point outside this locus line has this property.
Answer: (a)
Statements I and II are both true, because the locus of points which are equidistant from two parallel lines is a line parallel to both of them and draw mid way between them.
Also, it is true that the perpendicular distances of any point on this locus line from two original parallel lines are equal. Further, no point outside this locus line has this property.
In the figure given below, PQ is a diameter of the circle whose centre is at O. If ∠ROS = 44° and OR is a bisector of ∠PRQ, then what is the value of ∠RTS?
Answer: (d)
Since, OR is a bisector of ∠PRQ.
∴ ∠PRO = ∠ORQ = 45°
Also, OP = OR
∴ ∠OPR = 45°
In ΔORS,
OR = OS ⇒ ∠ORS = ∠OSR = ${180° - 44°}/2$ = 68°
∴ ∠MRS = 68° – 45° = 23°
⇒ ∠PRS = 90° + 23° = 113°
By properties of cyclic quadrilateral.
∠PRS + ∠PQS = 180°
⇒ ∠PQS = 180°– 113° = 67°
In ΔPTQ,
∠QPT + ∠PQT + ∠PTQ = 180°
⇒ ∠PTQ = 180° – 45° – 67° = 68°
In the figure given above, a circle is inscribed in a quadrilateral ABCD. Given that, BC = 38 cm, QB = 27 cm, DC = 25 cm and AD is perpendicular to DC. What is the radius of the circle?
Answer: (c)
Given BC = 38 cm
QB = 27 cm
DC = 25 cm
AD ⊥ DC
We know that tangents are always equal, when they drawn to the circle from a point outside the circle.
∴ BQ = BR = 27 cm
RC = BC – BR = 38 – 27 = 11 cm
RC = PC = 11 cm
DC = 25 cm
DP = DC – PC = 25 – 11 = 14 cm
DP = OT = OP
∴ Radius of the circle = 14 cm
The area of the largest triangle that can be inscribed in a semicircle of radius r is
Answer: (b)
Let ABC is triangle, which have maximum area, while
AC is 2r
But OB = OC = r
By Pythagoras theorem
$OB^2 + OC^2 = BC^2$
BC = $√2$r = AC
Area of triangle = $1/2 × √2r × √2r = r^2$
A wire is in the form of a circle of radius 42 cm. If it is bent into a square, then what is the side of the square?
Answer: (b)
Circumference of circle = 2π × 42
= $2 × {22}/7 × 42$ = 264 cm
Perimeter of square = 4x ⇒ 264 = 4x
x = 66 cm
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