Maths objective questions on area perimeter and menstruation

Maths objective questions on area perimeter and menstruation
multiple choice questions on Perimeter and Area
MCQ on maths geometry area perimeter and menstruation
1. The length of a rectangle is 1 cm more than its width and its perimeter is 14 cm, then
the area of the rectangle is
(a) 16 cm2
(b) 14 cm2
(c) 12 cm2
(d) 10 cm2
Ans. (c)


2. If the length of a rectangle is increased by 1/3 rd and the width is decreased by 1/3rd , then
the area of the rectangle is decreased by the fraction.
(a) 2/3
(b) 1/6
(c) 1/9
(d) 1/8
Ans. (c)

3. A rectangular field 50 metres long and 42 metres broad contains a rectangular lawn
inside it surrounded by a gravel path of uniform width. If the width of the path is 6 m,
then the area of the path is
(a) 240 m2
(b) 480 m2
(c) 720 m2
(d) 960 m2
Ans. (d)

4. The cost of plastering the four walls of a room is Rs 25. The cost of plastering a room
twice in length, breadth and height will be
(a) Rs 50
(b) Rs 75
(c) Rs 100
(d) Rs 200
Ans. (c)

5. The sides of an equilateral triangle are (2a – b) cm, (a + 3b) cm and (2a – 2b + 1)
cm then the perimeter of the triangle is
(a) 3 cm
(b) 12 cm
(c) 15cm
(d) 21 cm
Ans. (d)

6. The sides of a triangle are 5 cm, 12 cm and 13 cm. Then its area is
(a) 0.0024 m2
(b) 0.0026 m2
(c) 0.003 m2
(d) 0.0015 m2
Ans. (c)

7. The area of a triangle, whose sides are 4 cm, l3 cm and 15 cm, is
(a) 21 cm2
(b) 24 cm2
(c) 48 cm2
(d) 56 cm2
Ans. (b)

8. The lengths of the sides of a triangle are in integers and its area is also an integer. One
side is 21 cm and the perimeter is 48 cm, then the length of the shortest side is
(a) 8 cm
(b) 10 cm
(c) 12 cm
(d) 14 cm
Ans. (b)

9. The diagonals of a rhombus are 8 cm and 10 cm. Then the area of the rhombus is
(a) 64 cm2
(b) 100 cm2
(c) 80 cm2
(d) 40 cm2
Ans. (d)

10. The area of a parallelogram is 70 dm2 and its attitude is 7 dm, then the perimeter of a
rectangle of equal area standing on the same base is
(a) 40 dm
(b) 28 dm
(c) 34 dm
(d) 17 dm
Ans. (c)

11. If the radius of the circle is increased by 100%, then the area is increased by
(a) 100%
(b) 200%
(c) 300%
(d) 400%
Ans. (c)

12. If the difference between the circumference and radius of a circle is 37 cm, then the
area of the circle is
(a) 111 cm2
(b) 148 cm2
(c) 259 cm2
(d) 154 cm2
Ans. (d)

13. If the circumference of a circle is reduced by 50%, then the area will be reduced by
(a) 50%
(b) 25%
(c) 75%
(d) 12.5%
Ans. (c)

14. A solid cylinder of glass whose diameter is 1.5 m and height 1 m is melted and turned
into a sphere. The diameter of a sphere is
(a) 1 m
(b) 0.75 m
(c) 1.25 m
(d) 1.5 m
Ans. (c)

15. If a square and a circle have the same perimeter then
(a) the area of the circle is greater than that of square
(b) the area of the square is greater than that of circle
(c) the area of the square is l/? times that of the circle
(d) their areas are equal
Ans. (a)

16. A circular disc of radius 10 cm is divided into sectors with angles 120° and 150°, then
the ratio of the areas of two sectors is
(a) 4 : 5
(b) 5 : 4
(c) 2 : 1
(d) 8 : 7
Ans. (a)

17. Three metal cubes of volume 125 cm3, 64 cm3 and 27 cm3 are melted to form a new
cube, then the edge of the new cube formed is
(a) 12 cm
(b) 6 cm
(c) 20 cm
(d) 10 cm
Ans. (b)

18. If each edge of a cube is increased by 50%, then the percentage increase in the
surface area is
(a) 50
(b) 125
(c) 150
(d) 300
Ans. (b)

19. A metal pipe has an external diameter of 4 cm and internal diameter of 3 cm and is
20cm long, then the volume, of the metal used is
(a) 22 cm3
(b) 110 cm3
(c) 220 cm3
(d) 440 cm3
Ans. (b)

20. A rectangular sheet of paper 22 cm long and 10 cm broad can be curved to form the
lateral surface area of a right circular cylinder in two ways. Then the difference
between the volumes of the two cylinders thus formed is
(a) 200 cm3
(b) 210 cm3
(c) 250 cm3
(d) 252 cm3
Ans. (b)

21. The height and base radius of a cone are each increased by 100%, then the volume of
the cone becomes
(a) double
(b) three times
(c) six times
(d) eight times
Ans. (d)

22. The radius of a sphere is increased by 50%, then the increase in surface area of a
sphere is
(a) 200%
(b) 150%
(c) 125%
(d) 50%
Ans. (c)

23. A right circular cone and a cylinder have a circle of unit radius as base and their
heights are equal to the radius itself and a hemisphere has the same radius, then their
volumes are proportional respectively to
(a) 1 : 2 : 3
(b) 3 : 2 : 1
(c) 2 : 1 : 3
(d) 1 : 3 : 2
Ans. (d)

24. The length of a rectangle exceeds its breadth by 3 cm. If the numerical values of the
area and the perimeter of the rectangle are equal, then the breadth of a rectangle will
be
(a) 2 cm
(b) 3 cm
(c) 1 cm
(d) 5 cm
Ans. (b)

25. If the number of units in the circumference of a circle is same as the number of units
in the area, then the radius of the circle will be
(a) 1 unit
(b) 2 units
(c) 3 units
(d) 4 units
Ans. (b)