Answer:
1. 60dm², 14dm²
2. 46dm²
3. 21.5cm²
Step-by-step explanation:
1.
(Rectangle A)
A = L x W
A = 10dm x 6dm
A = 60dm²
(Rectangle B)
A = 7dm x 2dm
A = 14dm²
Area of the shaded region = area of rectangle A - area of rectangle B
= 60dm² - 14dm²
= 46dm² = the area of the shaded region
2.
Area of square
A = s x s
A = 10cm × 10cm
A = 100cm²
Area of circle
A = πr²
A = 3.14 x 5cm x 5cm
A = 3.14 x 25cm²
A = 78.5cm²
Area of the shaded region = area of square - area of circle
= 100cm² - 78.5cm²
= 21.5cm² - the area of the shaded region
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Answers & Comments
Answer:
1. 60dm², 14dm²
2. 46dm²
3. 21.5cm²
Step-by-step explanation:
1.
(Rectangle A)
A = L x W
A = 10dm x 6dm
A = 60dm²
(Rectangle B)
A = L x W
A = 7dm x 2dm
A = 14dm²
Area of the shaded region = area of rectangle A - area of rectangle B
= 60dm² - 14dm²
= 46dm² = the area of the shaded region
2.
Area of square
A = s x s
A = 10cm × 10cm
A = 100cm²
Area of circle
A = πr²
A = 3.14 x 5cm x 5cm
A = 3.14 x 25cm²
A = 78.5cm²
Area of the shaded region = area of square - area of circle
= 100cm² - 78.5cm²
= 21.5cm² - the area of the shaded region