Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
primary 6 | Maths
| Ratio
One Answer Below
Anyone can contribute an answer, even non-tutors.
Ratio question that I don’t know and needs help because I am confused
Date Posted: 5 years ago
Views: 372
If 2/7 of area of square is shaded,
You can treat area of square as 7 units, and 2 units are shaded.
Since area of square is ⅓ the area of rectangle, area of rectangle is 3 times area of square.
Rectangle → 7 units x 3 = 21 units.
Total area of figure
→ 21 units + 7 units - 2units (we have to take into account the shaded area, can't double count it)
= 26 units
Unshaded area → 26 units - 2 units
= 24 units
Fraction = 24/26 = 12/13
You can treat area of square as 7 units, and 2 units are shaded.
Since area of square is ⅓ the area of rectangle, area of rectangle is 3 times area of square.
Rectangle → 7 units x 3 = 21 units.
Total area of figure
→ 21 units + 7 units - 2units (we have to take into account the shaded area, can't double count it)
= 26 units
Unshaded area → 26 units - 2 units
= 24 units
Fraction = 24/26 = 12/13
See 1 Answer
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Hope this helps
Date Posted:
5 years ago
360 Tutoring Program