surface area and its volume class9 most important questions
Find the curved surface area of a circular area of a right circular cone whose slant height is 10 cm and the radius of the base is 7 cm curved surface area of cone = πrl 22/7 * 7 * 10 Answer =220 Find the total surface area of a hemisphere of radius 10 cm total surface area of a hemisphere= 3πr 2 3*3.14*10*10 Answer = 942 Write 4=5x-3y in the form ax +by +c=0 and find the values of a b and c ax +by+c =0 5x +(-3y)=4 5x-3y-4=0 a=5 b=-3 c=-4 When a spherical balloon is filled with air,...