Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 4 | E Maths
2 Answers Below
Anyone can contribute an answer, even non-tutors.
Hi, can I have help for this with explanation. Thanks
Date Posted: 3 years ago
Views: 281
See 2 Answers
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
This is a question of similar triangles and ratios.
Remember that if two triangles are similar the ratio of their sides will remain the same.
Because the area of triangle is calculated using 2 sides, area ratio will be the square of the side ratio.
Note that although 3 sides are used to calculate volume (base, height, depth), only 2 sides are in ratio (depth does not change in this case), so volume is in the same ratio as area.
For part ii, graph, note that volume is increasing exponentially, but rate of water is constant. Graph is a flattened curve. I have left out the two points of reference (fully filled at 12s and the point we calculated at part i) on purpose, use it to practice. You need to put in those.
Remember that if two triangles are similar the ratio of their sides will remain the same.
Because the area of triangle is calculated using 2 sides, area ratio will be the square of the side ratio.
Note that although 3 sides are used to calculate volume (base, height, depth), only 2 sides are in ratio (depth does not change in this case), so volume is in the same ratio as area.
For part ii, graph, note that volume is increasing exponentially, but rate of water is constant. Graph is a flattened curve. I have left out the two points of reference (fully filled at 12s and the point we calculated at part i) on purpose, use it to practice. You need to put in those.
Date Posted:
3 years ago
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
This is a question of similar triangles and ratios.
Remember that if two triangles are similar the ratio of their sides will remain the same.
Because the area of triangle is calculated using 2 sides, area ratio will be the square of the side ratio.
Note that although 3 sides are used to calculate volume (base, height, depth), only 2 sides are in ratio (depth does not change in this case), so volume is in the same ratio as area.
For part ii, graph, note that volume is increasing exponentially, but rate of water is constant. Graph is a flattened curve. I have left out the two points of reference (fully filled at 12s and the point we calculated at part i) on purpose, use it to practice. You need to put in those.
Remember that if two triangles are similar the ratio of their sides will remain the same.
Because the area of triangle is calculated using 2 sides, area ratio will be the square of the side ratio.
Note that although 3 sides are used to calculate volume (base, height, depth), only 2 sides are in ratio (depth does not change in this case), so volume is in the same ratio as area.
For part ii, graph, note that volume is increasing exponentially, but rate of water is constant. Graph is a flattened curve. I have left out the two points of reference (fully filled at 12s and the point we calculated at part i) on purpose, use it to practice. You need to put in those.
Date Posted:
3 years ago
Thanks
360 Tutoring Program