How do you calculate the area of these figures
Answers
Answer:
by separating the 1/4 part of each figure then u can solve it
Given : Three figures to calculate area of shaded portion
To Find : The way to find area of shaded portion
Solution:
1st figure :
Larger arc area = (90/360) π 8² = 16π cm²
Semi circle area = (180/360) π 4² = 8 π cm²
Area of shaded portion in Semi circles = 2( (90/360) π 4² - (1/2) * 4 * 4)
= 2 (4π - 8)
= 8(π - 2)
Total Shaded area = 16π - (2 *8 π - 8(π - 2)) + * 8 (π - 2)
= 16 (π - 2) cm²
2nd figure
Similarly can be done for 2nd picture at it is just opposite
Area of unshaded portion in Semi circles = 2( (90/360) π 2² - (1/2) * 2 *2)
= 2 (π - 2)
4π - 2 (π - 2) - 2 (π - 2)
= 8 cm²
3rd figure M & N position not defined
However Area of ABCD - Area of BMN - Area of ADC = Shaded portion
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