Subject

    Quantitative Aptitude

    Topic

    Areas & Volumes

    Find the area of a right-angled triangle whose base is 12 cm and hypotenuse is 13cm.

    ক)
    30
    খ)
    40
    গ)
    50
    ঘ)
    60

    Explanation

    Height of the triangle = (132−122)=25\sqrt{\left(13^2-12^2\right)}=\sqrt{25} = 5 cm. Its area = 12∗base∗height\frac12\ast base\ast height = 12∗12∗5\frac12\ast12\ast5 = 30cm230cm^2

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