Surface areas & volumes for class 9th& 10th

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SURFACE AREAS AND VOLUMES:

•Lateral surface area of cube:  4a^2

• Surface area of cube:    6a^2

• Volume of cube:.    a^3

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

• Surface area of cuboid:   2(lb+bh+hl)

• Volume of cuboid:     l×b×h

• Curved surface area of cone:   πrl

• Surface area of cone:     πr(l+r)

• Volume of cone:   1/3πr^2h

• Surface area of sphere:  4πr^2

• Curved surface area of hemisphere:

                        (2/3)πr^3

• Surface area of hemisphere:   3πr^2

• Volume of sphere:.  4/3^3

• Volume of hemisphere:.  2/3^3

• Curved surface area of cylinder:   2πrh

• Surface area of cylinder:   2πr(r+h)

• Volume of cylinder:.   πr^2h

• Curved surface area of frustum of               cone:     πl( r1 +r2)

• Surface area of frustum of cone:

         πl(r1+r2) +π(r1^2+r2^2)

• Volume of frustum of cone:

          1/3πh(r1^2 + r2^2 + r1r2)


      

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