Each edge of an equilateral triangle is 'a' cm A cone is formed by joining any 2 sides of - Maths -

Question

Each edge of an equilateral triangle is 'a' cm A cone is formed by
joining any 2 sides of the triangle What is the volume of the cone
in cm cube ?concm3

Lovina Kansal · Accepted Answer

Dear student
Clearly, slant height of cone=aand 2πr=ar=a2πSo, h=a2-r2=a2-a24π2=4a2π2-a24π2=a2π4π2-1So, volume of cone=13πr2h=13πa2π2a2π4π2-1=a34π2-124π2cm3
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Each edge of an equilateral triangle is 'a' cm. A cone is formed by joining any 2 sides of the triangle . What is the volume of the cone in cm cube ?concm3