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Question
primary 6 | Maths
| Measurement
2 Answers Below
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Pls help. Thanks
Date Posted: 2 years ago
Views: 440
3.14×20² - 2×20²
= 456 cm² (Ans)
= 456 cm² (Ans)
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Angle subtended at centre of circle is 90 degrees.
So area of one sector is 1/4 of area of circle with radius 20cm.
And area of triangle is 1/2 base x height.
Base=Height=20cm
So area of one sector is 1/4 of area of circle with radius 20cm.
And area of triangle is 1/2 base x height.
Base=Height=20cm
Date Posted:
2 years ago
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