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Find the surface area of a sphere of radius 5.6 cm. Assume [Assume π=227] - Mathematics

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प्रश्न

Find the surface area of a sphere of radius 5.6 cm.

`["Assume "pi=22/7]`

योग
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उत्तर

Radius(r) of sphere = 5.6 cm

Surface area of sphere = 4πr2

`=[4xx22/7xx(5.6)^2]cm^2`

= (88 × 0.8 × 5.6) cm2

= 394.24 cm2

Therefore, the surface area of a sphere having radius 5.6 cm is 394.24 cm2.

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अध्याय 13: Surface Area and Volumes - Exercise 13.4 [पृष्ठ २२५]

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एनसीईआरटी Mathematics [English] Class 9
अध्याय 13 Surface Area and Volumes
Exercise 13.4 | Q 1.2 | पृष्ठ २२५

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