document.write( "Question 1028461: A sector of a circle of radius 8cm subtends an angle 90 degrees at the centre of the circle. If the sector is folded without overlap to form the curved surface of a cone, find the base radius, height and volume of the cone taking pie as 22/7
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #643558 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A sector of a circle of radius 8cm subtends an angle 90 degrees at the centre of the circle. If the sector is folded without overlap to form the curved surface of a cone, find the base radius, height and volume of the cone taking pie as 22/7 \n" ); document.write( "------- \n" ); document.write( "Perimeter of the circle 16pi \n" ); document.write( "---- \n" ); document.write( "Perimeter of the base of the cone:: (3/4)16pi = 12pi \n" ); document.write( "--- \n" ); document.write( "height of cone:: \n" ); document.write( "radius of base of cone:: 12pi/(2pi) = 6 \n" ); document.write( "h^2 = 8^2 - 6^2 = 64-36 = 28 \n" ); document.write( "h = sqrt(28) \n" ); document.write( "--------------- \n" ); document.write( "volume of cone:: (1/3)pi*r^2*h = (1/3)pi*36* \n" ); document.write( "--------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------- \n" ); document.write( " |