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Question
primary 6 | Maths
| Algebra
One Answer Below
This question need another answer.
I dont understand and how to do.. pls help me
Date Posted: 4 years ago
Views: 492
Which combination of areas can give you 45cm² ?
It's 36cm² and 9cm²
36 + 9 = 45
So the bigger square is 6cm by 6cm and the smaller one is 3cm by 3cm
Area of smaller square = 3cm x 3cm = 9cm²
Area of bigger square = 6cm x 6cm = 36cm²
36cm² + 9cm² = 45cm²
It's 36cm² and 9cm²
36 + 9 = 45
So the bigger square is 6cm by 6cm and the smaller one is 3cm by 3cm
Area of smaller square = 3cm x 3cm = 9cm²
Area of bigger square = 6cm x 6cm = 36cm²
36cm² + 9cm² = 45cm²
For the perimeter, there are 3 sides of each square that are not covered.
For the last side of each square, the small square covered part of the big square. So this means that 3cm is covered. Only 3cm is exposed.
Perimeter
= 3 x 6cm + 3 x 3cm + 3cm
= 18cm + 9cm + 3cm
= 30cm
For the last side of each square, the small square covered part of the big square. So this means that 3cm is covered. Only 3cm is exposed.
Perimeter
= 3 x 6cm + 3 x 3cm + 3cm
= 18cm + 9cm + 3cm
= 30cm
See 1 Answer
done
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clear
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You have to analyse the figure properly to get the answer correct. I hope my workings are not too messy.
Date Posted:
4 years ago
Total area 45
Ironically, the poster has not analysed the figure properly...
J’s comment made me LOL-ed.
Erm it's wrong they were correct
J is right
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