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the radius of sphere is measured to be (2.1+-0.5).calculate the percentage error in its surface area​

Answer»

ANSWERsurface AREA of sphereA=4πr 2 a=4×3.14×(2.1) 2 =55.4cm 2 A=4πr 2 A=4×3.14×(2.1) 2 =55.4cm 2 \\ AΔA =2× rΔr ΔA=2× rΔr ×A =2× 2.10.5 ×55.4=26.4cm 2 SURFACE area =(55.4±26.4)CM 2



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