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primary 6 | Maths
| Measurement
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Can i ask why the radius for small semicircle is 7 and not 3.5?
Date Posted: 1 year ago
Views: 154
The RADIUS for big semicircle is 21 cm, therefore, diameter for big semicircle = 21×2 =42 cm
Hence, diameter for small semicircle = 42 ÷ 3
= 14 cm
Radius = 14 ÷ 2 = 7 cm.
Hope this clear your doubts.
Hence, diameter for small semicircle = 42 ÷ 3
= 14 cm
Radius = 14 ÷ 2 = 7 cm.
Hope this clear your doubts.
5×( ²²⁄₇ )×(21÷6)² = 192.5 cm² （Answer）
Thank you both
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Date Posted:
1 year ago
Thank you
The RADIUS for big semicircle is 21 cm, therefore, diameter for big semicircle = 21×2 =42 cm
Hence, diameter for small semicircle = 42 ÷ 3
= 14 cm
Radius = 14 ÷ 2 = 7 cm.
Hope this clear your doubts.
Hence, diameter for small semicircle = 42 ÷ 3
= 14 cm
Radius = 14 ÷ 2 = 7 cm.
Hope this clear your doubts.
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