SSC
Government Jobs Exams
Numerical Ability
Area and Volume
At each corner of a triangular field of sides 26 m, 28 m and 30 m, a cow s tethered by a rope of length 7 m. The area (in m2) unglazed by the cows is
Read Solution (Total 1)
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- s= 26+28+30 ÷ 2 = 42
√42(42-26)(42-28)(42-30) = 336sqm
total sum of angles of ∆ = 180°
area of circle (360°) grazed by 1 cow = πr`2 = 22/7 (7x7) = 154m`2
grazed area of traingle i.e. 180° = 154/2 = 77m2
ungrazed area = 336-77 = 259m2
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