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(Study Material) RRB NTPC (Tier -2) Exam (Numerical Aptitude) - Area of Plane Figures

(Study Material) RRB NTPC (Tier -2) Exam (Numerical Aptitude) - Area of Plane Figures

1. The figure below represents a parking lot that is 30 m by 40 m and an attached driveway that has an outer radius of 20 m and an inner radius of 10 m. If the shaded region is not included, what is the area, in square metres of the lot and driveway?

2. What is the area of the region enclosed by the area below?

(a) 116
(b) 144
(c) 176
(d) 179

3. The length and breadth of a rectangular hall are 40 m and 30 m respectively. What is the distance between two opposite corners of the hall?

(a) 20 m
(b) 35 m
(c) 50 m
(d) 40 m

4. The sides of a triangle are in the ratio 1/2 : 1/3 : 1/4 and its perimeter is 104 cm. The length of the longest side (in cm) is

(a) 26
(b) 32
(c) 48
(d) 52

5. A rectangular field has dimensions 25 m by 15 m. Two mutually perpendicular passage, 2 m width have been left in its central part and grass has been grown in rest of the field. The areas (in sq metres) under the grass is

(a) 295
(b) 299
(c) 300
(d) 375

 

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