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Question
primary 6 | Maths
| Geometry
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Pls help
Date Posted: 5 years ago
Views: 380
(a)
*a total of 10 circles
perimeter
= circumference of 10 circles
= 10 x 2 x π x 7
= 440 cm
(b)
area of 1 circle
= π x 7 x 7
= 154 cm²
area of 9 circles
= 9x154
= 1386 cm²
area of rectangle = L x B
= (7x14) x (4x14)
= 5488 cm²
area of rug
= 5488+1386-154
= 6720 cm²
...
*a total of 10 circles
perimeter
= circumference of 10 circles
= 10 x 2 x π x 7
= 440 cm
(b)
area of 1 circle
= π x 7 x 7
= 154 cm²
area of 9 circles
= 9x154
= 1386 cm²
area of rectangle = L x B
= (7x14) x (4x14)
= 5488 cm²
area of rug
= 5488+1386-154
= 6720 cm²
...
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