Question

A solid rectangular piece of iron measure 1.05m×70cm×1.5cm.find the weight of this piece in kilograms if 1cm cube of iron weighs 8 grams

Answer 1

hey friend

1.05 m ---> 1.05 into 100----> 105cm
70cm
1.5cm

now we know that volume of cuboid is equal to lbh
so,
105 X 70 X 1.5 
11025 cm cube

now to find the weight we will multiply the volume by 8.

11025 X 8
88200 grams

now convert it to kilograms
88.2 kg