Question

please answer !!!!!!!!!!!!!!!!​

Answer 1

Answer:

see the attached image

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Answer 2

Answer:

area of segment=(π theta/360-sin theta/2×cos theta/2)r^2

(3.14×90°/360°-sin45°×cos45°)

(3.14×1/4-1/√2×1/√2)×100

(1.57×1/2-1/2))×100

1/2(1.57-1))×100

1/2×0.57)×100

0.285)×100

=28.5cm^2