What does it mean for a molecule to diffuse down a concentration gradient?

Given:

An umbrella is made by stitching 10 triangular pieces of cloth.

Each pieces measuring 48cm,48cm, and 30cm.

To find:

The cost of required to make umbrella at rate of 5 paisa per square cm.

Solution:

Area of a triangle is:

Where,

Each pieces measuring 48cm,48cm, and 30cm. So,

Area of one triangular piece is:

Area of 10  triangular pieces is:

The rate is 5 paisa per square cm. So, the total cost is:

Therefore, the total cost is 34197.04 paisa.