An umbrella is made by stitching 10 triangular pieces of cloth of two different colours where each pieces measuring 48cm,48cm, and 30cm. find cost of required to make umbrella at rate of 5paisa per square cm. help plz plz

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.

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step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value