Question

A closed aquarium of dimensions 30 cm x 25 cm x 20 cm is made up entirely of glass plates held together with tapes. The total length of tape required to hold the plates together (ignore the overlapping tapes) is​

Answer 1

The dimensions of the closed aquarium:

Length, l = 30 cm

Breadth, b = 25 cm

Height, h = 20 cm

Since it is given that the glass plates are held together with tapes i.e., the tapes are used along the edges in order to hold back the glass plates into a closed aquarium.

For this, we will first calculate the total length, breadth and height of the edges in the closed aquarium .

Therefore, we have

Total length = 4*l = 4 * 30 = 120 cm

Total breadth = 4 * b = 4 * 25 = 100 cm

Total height = 4 * h = 4 * 20 = 80 cm

Thus,

The total length of the tape required to hold the plates together is given by,

= Total length + Total breadth + Total height

= 120 + 100 + 80

= 300 cm