question archive The true length of edge of cube is 15 cm what will be the isometric length? a) 17

The true length of edge of cube is 15 cm what will be the isometric length? a) 17

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The true length of edge of cube is 15 cm what will be the isometric length?

a) 17.78 cm

b) 14.48 cm

c) 12.99 cm

d) 12.22 cm 

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Answer: d

Explanation:\

The ratio of isometric length to true length is 0.815 so here it is given true length of 15 cm. 0.815 = isometric length / 15 cm

=> isometric length = 15 cm x 0.815

= 12.22 cm.

Every time the true length is more than isometric length.