It is known that the height of a cone is 6cm and the length of generatrix is 10cm. It is necessary to calculate the volume of the inscribed sphere and the surface area of the circumscribed sphere
Let H be the cone height, l be the generatrix length, a be the base radius, R be the inscribed sphere radius, R be the circumscribed sphere radius, then H & nbsp; = & nbsp; 6, & nbsp; L & nbsp; = & nbsp; 10A & nbsp; = & nbsp; sqrt (L ^ 2-h ^ 2) & nbsp; = & nbsp; 8 can be seen from the figure & nbsp; X ^ 2 + R ^ 2 & nbsp; = & nbsp; y ^ 2 and the value of X is & nbsp; X & nbsp