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Apt Mensuration 2d — Free Aptitude Tutorial

Learn Apt Mensuration 2d in Aptitude with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

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TL;DR: Learn Apt Mensuration 2d in Aptitude with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.

Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated Jul 14, 2026

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Apt Mensuration 2d in Aptitude

Rectangle: Area = l×b, Perimeter = 2(l+b), Diagonal = √(l²+b²).

Square: Area = s², Perimeter = 4s, Diagonal = s√2.

Circle: Area = πr², Circumference = 2πr. Semicircle area = πr²/2.

Triangle: Area = ½×base×height. Heron's formula = √[s(s-a)(s-b)(s-c)] where s = (a+b+c)/2.

Trapezoid: Area = ½×(sum of parallel sides)×height. Rhombus: Area = ½×d1×d2.

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