Diameter of inflated balloon is 18cm. How many cubic centimeter of air does it contains what is the surface area of balloon
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Step-by-step explanation:
diameter is 18 cm then
radius=18/2=9cm
volume of baloon = volume of sphere
= 4/3* πr^3
=4/3*22/7*(9cm)^3
=4/3*22/7*729cm^3
=4*22/7*243cm^3
=88/7*243cm^3
=21384/7cm^3
=3054.85cm^3
=3054.9cm^3
=3055cm^3 (approx.)
surface area of sphere=4πr^2
=4*22/7*(9cm)^2
=88/7*81cm^2
=7128/7cm^2
=1018.28cm^2
=1018.3cm^2
=1018cm^2(approx.)
volume and surface area of balloon=3055cm^3(approx.) and 1018cm^2(approx.).
hope this will help you!!!
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