Q. 2

Find the volume of a cube whose side is

(i) 4 cm

(ii) 8 cm

(iii) 1.5 dm

(iv) 1.2 m

(v) 25 mm

Answer :

(i) Given,


side of cube = 4 cm


volume of cube = (side)3 = 43 = 64 cm3


(ii) side of cube = 8 cm


volume of cube =(side)3 = 83 = 512 cm3


(iii) side of cube = 1.5 dm


volume of cube = (side)3 = 1.53 = 3.375 dm3 = 3375 cm3


(iv) side of cube = 1.2 m


volume of cube = 1.23 = 1.728 m3


(v) side of cube = 25 mm


volume of cube = 253 = 15625 mm3= 15.625 cm3


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