Question

A rectangular piece of metal major 3m long 1.5 m wide and 3 cm find the weight of this piece if a cubic cm of the metal weight 7 gram

Answer 1

$\Longrightarrow{\boxed{\bold{Answer: 945,000\:g }}}$

$\textbf{\underline{Step-by-step explanation :- }}$

Volume of cuboid = length × breadth × height

Since weight is aksed for per cubic cm therefore we will convert all units into cm.

Length = 3 × 100 cm = 300 cm

Breadth = 1.5 × 100 cm = 150 cm

Volume of cuboid = 300 cm × 150 cm × 3 cm

= 135000 cm³

Since one cm³ weigh = 7 gram

So, 135000 cm³ will weigh = 135000 × 7 g

= 945000 g or

$\textbf{\huge{=\underline{945 kg}}}$