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Sagot :
Answer:
20.28 cm²
Step-by-step explanation:
The rectangle on the bottom is 7 cm by 2 cm.
The semicircle has a diameter of 7 cm - 1 cm - 2 cm = 4 cm
diameter = 4 cm
radius = diameter/2 = 2 cm
total area = area of semicircle + area of rectangle
total area = (1/2)πr² + LW
total area = (1/2)(3.14)(2 cm)(2 cm) + 7 cm × 2 cm
total area = 20.28 cm²
Area of rectangle
- 2(7)
- 14cm²
Area of semicircle
- π(7-3/2)²/2
- (4/2)²π/2
- 4π/2
- 12.56cm²/2
- 6.28cm²
Total area
- 6.28+14
- 20.28cm²
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