Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
primary 6 | Maths
| Geometry
One Answer Below
Anyone can contribute an answer, even non-tutors.
Pls help. Circles
Date Posted: 4 years ago
Views: 245
Big quarter circle - small quarter circle - rectangle.
Reason :
The big quarter circle is made of Q and the unshaded parts. And the unshaded parts are made up of the small quarter circle and a larger unshaded part inside the rectangle.
① Subtract the area of the small quarter circle from the big quarter circle.
You are left with Q and the larger unshaded part inside the rectangle.
② Subtract the rectangle's area from the result.
This takes away the larger unshaded part inside the rectangle. But the area P is also being taken away.
The result is Q - P.
The big quarter circle is made of Q and the unshaded parts. And the unshaded parts are made up of the small quarter circle and a larger unshaded part inside the rectangle.
① Subtract the area of the small quarter circle from the big quarter circle.
You are left with Q and the larger unshaded part inside the rectangle.
② Subtract the rectangle's area from the result.
This takes away the larger unshaded part inside the rectangle. But the area P is also being taken away.
The result is Q - P.
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Hope this helps
Date Posted:
4 years ago
Very detailed and easy to understand
Hopefully you should be able to see by now that the working (excellent drawing and use of model by AC by the way) can be summarised into the following single-step:
Area of big quarter circle - area of small quarter circle - area of rectangle
= 154 - 38.5 - 98
= 17.5
, which I explained in the main comments section yesterday.
Area of big quarter circle - area of small quarter circle - area of rectangle
= 154 - 38.5 - 98
= 17.5
, which I explained in the main comments section yesterday.
360 Tutoring Program