Question

If the total surface area of lidless cubical box is 90 cm square find the length of edge of the box​

Answer 1

√18

Explanation:

Ok, there's 5 squares that make up the box since the top's missing, so do:

90/5 --> 18

Since squares are simply length^2 to get the area, square root this value to give you your answer for each side length of this box:

√18