RRB ALP Recruitment and Group D Exam is nearing. It is a golden opportunity to get a Job with Indian Railways. To be able to clear the RRB ALP and Group D Recruitment Exam what is required is a good preparation plan. To assist you with your preparation, In this blog, we have compiled a list of important Geometrical formulas.
RRB ALP Recruitment and Group D Exam – Formulas of Area and Perimeter
| Figure | Area | Perimeter |
| Circle -:
|
= pi × r2 or = (pi × d2) / 4 |
= 2 × pi × r or = pi × d |
| Square -:
|
= s2 |
= s + s + s + s = 4 × s |
| Rectangle -:
|
= l × w |
= l + l + w + w = 2 × l + 2 × w |
| Triangle -:
|
= (b × h) / 2 |
= a + b + c |
| Parallelogram -:
|
= b × h |
= a + a + b + b = 2 × a + 2 × b |
| Rhombus -:
|
= b × h |
= b + b + b + b = 4 × b |
| Trapezoid -:
|
= (a + b) / 2 × h |
= a + b + c + d |
RRB ALP Recruitment and Group D Exam – Sample Questions
Q1) The width of a rectangular hall is 3/4th of its length. If the area of the hall is 300 sq.m, then the difference between its length and width is:
(a) 3 m
(b) 4 m
(c) 5 m
(d) 15 m
Answer = Option (c) – 5 m
Q2) A man walked 20 m to cross a rectangular field diagonally. If the length of the field is 16 m, the breadth of the field is:
(a) 4 m
(b) 16 m
(c) 12 m
(d) Can’t be determined
Answer = Option (c) – 12 m
We hope this blog is helpful for your RRB ALP Recruitment and Group D Exam preparation.
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All the best for RRB ALP Recruitment and Group D Exam
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