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Question
primary 6 | Maths
| Data Analysis
2 Answers Below
Anyone can contribute an answer, even non-tutors.
help pls. thanks.
Date Posted: 3 years ago
Views: 463
similar Q
https://ask.manytutors.com/questions/111349
(a)
r → radius of semicircle
6r + 2×14 = 4r + 18 + 2×24
r = (18 + 2×24 - 2×14)÷2 = 19 cm (Ans)
(b)
2.5 circle +2×(14+24) + 18
= 2.5×π×2×19 + 2×(14+24) + 18
= 392.45 cm (Ans)
https://ask.manytutors.com/questions/111349
(a)
r → radius of semicircle
6r + 2×14 = 4r + 18 + 2×24
r = (18 + 2×24 - 2×14)÷2 = 19 cm (Ans)
(b)
2.5 circle +2×(14+24) + 18
= 2.5×π×2×19 + 2×(14+24) + 18
= 392.45 cm (Ans)
alternative for (a)
24-14 = 10
18÷2 + 10 = 19 cm (Ans)
24-14 = 10
18÷2 + 10 = 19 cm (Ans)
See 2 Answers
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This question is same as the PSLE question 2 year's ago.
Have a look at the attached sample and attempt this .
The radius is 38/2 = 19cm
Have a look at the attached sample and attempt this .
The radius is 38/2 = 19cm
Date Posted:
3 years ago
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