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primary 6 | Maths
| Ratio
3 Answers Below
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Date Posted: 2 years ago
Views: 453
(a) perimeter
2×4 + 20 + 3.14×(20+10) + 0.5×3.14×(20-4)
= 147.32 cm (Ans)
(b) area
½ big ▢ + small semicircle - quarter
= ½ × 40² + 3.14× (½ ×10² - ¼ ×16²)
= 756.04 cm² (Ans)
2×4 + 20 + 3.14×(20+10) + 0.5×3.14×(20-4)
= 147.32 cm (Ans)
(b) area
½ big ▢ + small semicircle - quarter
= ½ × 40² + 3.14× (½ ×10² - ¼ ×16²)
= 756.04 cm² (Ans)
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Very clear explanation. Thank you v much!
done
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clear
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hope this helps.
Date Posted:
2 years ago
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