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primary 6 | Maths
| Geometry
2 Answers Below
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How to do? I have divided the parts but I don't know how to find them
Date Posted: 3 years ago
Views: 447
Big square - 1 circle with radius 28
= 56×56 - 22/7 × 28²
= 3136 -2464
= 672 cm²
= 56×56 - 22/7 × 28²
= 3136 -2464
= 672 cm²
All the sectors combined together will give you a big circle with radius 28 cm
The angle in each sector is 45° so eight of them will have a combined angle of 360°, which is of 1 full circle
(recall that angle sum at a point is 360°.
A semicircle has angle 180° (straight line) and quadrant has angle 90° (right angle)
This 45° means that each identical sector is a ⅛ circle)
(recall that angle sum at a point is 360°.
A semicircle has angle 180° (straight line) and quadrant has angle 90° (right angle)
This 45° means that each identical sector is a ⅛ circle)
Another clue given in the diagram :
Notice that in the middle of the big square there are two pairs of sectors, where each pair is joined together. The combined angle is 90° and the shape should make you recall about quadrants.
We can have 4 such quadrants , which also makes up 1 full circle
Notice that in the middle of the big square there are two pairs of sectors, where each pair is joined together. The combined angle is 90° and the shape should make you recall about quadrants.
We can have 4 such quadrants , which also makes up 1 full circle
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Hope this helps✨
Date Posted:
3 years ago
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