Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
primary 5 | Maths
| Angles & Geometry
No Answers Yet
Help Justin! Anyone can contribute an answer, even non-tutors.
I need help
Date Posted: 5 years ago
Views: 565
2/15 of the figure is unshaded
2/15 = 16cm²
1/15 = 16cm² ÷ 2 = 8cm²
1 - 2/15 = 13/15
So shaded area = 13 x 8 cm² = 104cm²
Notice that for both triangles, the common area between them is the unshaded part. Since both triangles are identical, they have identical areas.
This tells you that their shaded areas are equal. Which means 104cm² = 2 area A
So area of A = 104 ÷ 2 = 52 cm²
2/15 = 16cm²
1/15 = 16cm² ÷ 2 = 8cm²
1 - 2/15 = 13/15
So shaded area = 13 x 8 cm² = 104cm²
Notice that for both triangles, the common area between them is the unshaded part. Since both triangles are identical, they have identical areas.
This tells you that their shaded areas are equal. Which means 104cm² = 2 area A
So area of A = 104 ÷ 2 = 52 cm²
Thanks sir
360 Tutoring Program