Answer for 10 points
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area of circle = πr²
therefore area of each circle
= π×7²
= 22/7 × 7 × 7
= 154 cm²
therefore area of 4 sectors of angle 90°
= 4 × 90/360 × 154
= 154 cm²
area of square = side²
= 14 × 14
= 196 cm²
area inside square which isn't part of a circle = 196 - 154 = 42 cm²
42/196 = 0.21
therefore probability = 0.21
therefore area of each circle
= π×7²
= 22/7 × 7 × 7
= 154 cm²
therefore area of 4 sectors of angle 90°
= 4 × 90/360 × 154
= 154 cm²
area of square = side²
= 14 × 14
= 196 cm²
area inside square which isn't part of a circle = 196 - 154 = 42 cm²
42/196 = 0.21
therefore probability = 0.21
Answered by
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Answer:
area of circle = πr²
therefore area of each circle
= π×7²
= 22/7 × 7 × 7
= 154 cm²
therefore area of 4 sectors of angle 90°
= 4 × 90/360 × 154
= 154 cm²
area of square = side²
= 14 × 14
= 196 cm²
area inside square which isn't part of a circle = 196 - 154 = 42 cm²
42/196 = 0.21
therefore probability = 0.21
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