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Question
primary 5 | Maths
| Area & Volume
2 Answers Below
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I really need help with this question asap . I little tricky
Date Posted: 5 years ago
Views: 457
Triangle has base equal to one side of the square and height is also equal to one side of the square.
Since triangle area = ½ x base x height,
Area of shaded triangle
= ½ x length of square x length of square
= ½ x area of square
So ½ x area of square = 50cm²
Area of square = 50cm² x 2 = 100cm²
Now 100cm² = 10cm x 10cm
This means the square has length of 10cm
(I.e area of square = 10 cm x 10cm)
Since all 4 sides of a square have the same length,
Perimeter = 4 x 10cm = 40cm
Since triangle area = ½ x base x height,
Area of shaded triangle
= ½ x length of square x length of square
= ½ x area of square
So ½ x area of square = 50cm²
Area of square = 50cm² x 2 = 100cm²
Now 100cm² = 10cm x 10cm
This means the square has length of 10cm
(I.e area of square = 10 cm x 10cm)
Since all 4 sides of a square have the same length,
Perimeter = 4 x 10cm = 40cm
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