A. 3.34
B. 2
C. 4.5
D. 5.5
Area of the path = Area of the outer circle – Area of the inner circle = ∏{4/2 + 25/100}2 – ∏[4/2]2
= ∏[2.252 – 22] = ∏(0.25)(4.25) { (a2 – b2 = (a – b)(a + b) }
= (3.14)(1/4)(17/4) = 53.38/16 = 3.34 sq m
Related Mcqs:
- The perimeter of a rectangle and square are 160m each. The area of the rectangle is less than that it’s square by 100cm meters. The less than that of the square by 100 sq.meters. the length of rectangle is___________?
A. 30m
B. 40m
C. 50m
D. 60m - A path of uniform width turns the inside of a rectangular field 38m long and 32m wide. IF the path occupies 600 m2 than the width of the path is_______?
A. 3m
B. 5m
C. 8.75m
D. 10m - The diagonal of a square is 4√2cm. The diagonal is another square whose area is double that of the first square is__________?
A. 8cm
B. 8√2cm
C. 16cm
D. 4√2cm - If each side of a square is increased by 50% the ratio of the area of the resulting square to the area of the given square is__________?
A. 5:4
B. 9:4
C. 4:5
D. 4:9 - The area of a rectangle is thrice that of a square. The length of the rectangle is 40 cm and the breadth of the rectangle is (3/2) times of the square. The side of the square in cm is__________?
A. 15
B. 20
C. 30
D. 60 - A rectangular grass field is 75 m * 55 m, it has a path of 2.5 m wide all round it on the outside. Find the area of the path and the cost of constructing it at Rs.2 per sq m?
A. 675, Rs.1350
B. 575, Rs.1350
C. 1350, Rs.675
D. None - A circular path of 13 m radius has marginal walk 2 m wide all round it. Find the cost of leveling the walk at 25p per m2?
A. Rs.45
B. Rs.78
C. Rs.44
D. Rs.40 - A room is 6 meters 24 centimeters in length and 4 meters 32 centimeters in width. Find the least number of square tiles of equal size required to cover the entire floor of the room?
A. 110
B. 124
C. 96
D. 117 - The Length of a plot is four times is breadth. A playground measuring 1200 square meters occupies a third of the total area of the plot. What is the length of the plot in meters?
A. 20
B. 30
C. 60
D. None of these - The length of a rectangular room is 4 meters. If it can be partitioned into two equal square rooms. What is the length of each partition in meters:________?
A. 1
B. 2
C. 4
D. Data Inadequate
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