Question

List the surface areas and volumes of polyhydrons

Answer 1

surface area of cuboid =2(lb+bh+hl)

Lateral surface area of cuboid = 2(l+b)h

Volume of cuboid =l×b×h

surface area of cube = 6a^2

Lateral surface area of cube =4a^2

Volume of cube = a^3

Total surface area of cylinder =2πr(r+h)

Curved surface area of cylinder = 2πrh

Volume of cylinder =πr^2h

Total surface area of cone = πrl+πr^2 or

πr(l+r)

Curved surface area of cone = πrl

Volume of cone =1/3πr^2h

surface area of sphere = 4πr^2

Volume of sphere = 4/3πr^3

total surface area of hemisphere = 3πr^2

curved surface area of hemisphere = 2πr^2

Volume of hemisphere = 2/3πr^3