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Three cubes each of side 10 cm are joined end to end. Find the surface area of the resultant figure. - Mathematics

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प्रश्न

Three cubes each of side 10 cm are joined end to end. Find the surface area of the resultant figure.

योग
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उत्तर

If three cubes each of side 10 cm are joined, then a cuboid will be formed of dimensions 30 cm × 10 cm × 10 cm.


∴ Surface area of the cuboid = `2[lb + bh + hl]`

= 2[30 × 10 + 10 × 10 + 30 × 10]

= 2[300 + 100 + 300]

= 2[700]

= 1400 cm2 

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अध्याय 11: Mensuration - Exercise [पृष्ठ ३५७]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 8
अध्याय 11 Mensuration
Exercise | Q 103. | पृष्ठ ३५७

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