Krishna
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Step 1; Note down the given values and draw the figure according to the given instructions

Step 2: Find the unknown area by the known areas.

NOTE: Area of the minor segment = Area of the sector - area of the triangle

Step 3: Calculate the area of the sector

[Step 1: Recall the area of the sector formula

NOTE: \frac{\theta}{360} * \pi r^2

Step 2: Substitute all the values in the formula.

EXAMPLE:   \frac{\theta}{360} * \pi r^2

\frac{90}{360}\ *\ 3.14\ *\ 10^2

Step 3: Simplify the equation

EXAMPLE:  \frac{1}{4}\cdot\ 314\ cm^2

78.5\ cm^2]

Step 4: Find the area of the right angle triangle

EXAMPLE: Area of right angled triangle QPR = \frac{1}{2} * base * height

=\frac{1}{2}\times10\times10

=50\ cm^2

Step 5: Determine the area of the segment

NOTE: Area of the minor segment = Area of the sector - area of the triangle

EXAMPLE: Area of the minor segment = 78.5 - 50

= 28.5

Step 6: Evaluate the circle area

NOTE: Area of the circle = \pi r^2

EXAMPLE: 3.14 * 10 * 10

=    314 cm^2

Step 7: Find the major segment area

NOTE: Major segment area = Total area of the circle - area of the minor

segment

=  314 - 28.5  cm^2

= 285.5 cm^2