theFind the radius of the base of a right circular cylinder whose curv

1.	theFind the radius of the base of a right circular cylinder whose curved surface aresum of the surface areas of two circular faces. The height of the cylinder is given to be15 cm.
Answer» CSA=2/3×[2(pi×r²)]2pi×r×h=2/3×[2(pi×r²)]3×2pi×r×h=2×[2(pi×r²)]3×2pi×r×h=2×2pi×r²3×r×h=2r²r×3×15=2r²(3×15)/2=r²/r45/2=rr=22.5cm Hence radius of the cylinder is 22.5cm

theFind the radius of the base of a right circular cylinder whose curved surface aresum of the surface areas of two circular faces. The height of the cylinder is given to be15 cm.

Answer»

CSA=2/3×[2(pi×r²)]2pi×r×h=2/3×[2(pi×r²)]3×2pi×r×h=2×[2(pi×r²)]3×2pi×r×h=2×2pi×r²3×r×h=2r²r×3×15=2r²(3×15)/2=r²/r45/2=rr=22.5cm

Hence radius of the cylinder is 22.5cm