Question

find the perimeter of following figure ​

Answer 1

Answer:

8400

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Answer 2

Answer:

Breadth of rectangle = 84 cm

Length of rectangle = 100 cm

Radius of semicircle = 84/2 cm

= 42 cm

Both of the semicircles when joined make a circle

Hence the perimeter of circle = 2πr

= 2 × $\frac{22}{7}$ × 42

= 2 × 22 × 6

= 264 cm

Perimeter of rectangle = 2 (l + b)

= 2 (100 + 84)

= 2 × 184

= 368 cm

Perimeter of the figure = Perimeter of rectangle + Perimeter of circle

= 368 cm + 264 cm

= 632 cm

Hope it helps