Question

A cubical box without lead is 35 cm long,what is its total surface area

Answer 1

$\Longrightarrow{\boxed{\bold{Answer: 6125\:cm^2}}}$

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

Without lead means without cap in cubical box.

This means that left area = lateral area + base area

Now lateral area ( area of 4 walls ) = 4l²

Area of square base = l²

Area = 4l² + l²

Area = 5l²

Area = 5 × 35²

$\bold{\underline{\huge{=\:6125\:cm^2}}}$