Question

A solid rectangular piece of iron measures 3m by 5cm by 2cm find the weight if 1cm3 weighs 8g

Answer 1

Answer: Given,

Measures of cuboid= 3m * 5cm * 2cm

                                 = 300cm * 5cm * 2cm

Weight of per $cm^{3}$= 8g

Now,

Volume of cuboid= (length)(breath)(height)

                             =(300)(5)(2)

                             =3000$cm^{3}$

Weight of cuboid = 3000*8

                             = 24000g

                             = 24kg

Answer 2

Answer:

24 kg or 24000 grams

Step-by-step explanation:

weight of rectangular iron piece= ( volume of the rectangular iron piece in cm³ x 8 )

volume of rectangle = l x b x h

= 300 x 5 x 2 ( 3 m = 300 cm )

= 3000 cm

weight of iron piece= 3000 x 8

= 24000 grams = 24 kg