1)
x = Area of triangle - Area of rectangle
x = (1/2)(10)(13) - (8)(5)
x = 65 - 40
x = 25 in²
2)
x = area of rectangle_1 + area of rectangle_2
x = 5(6) + 7(3)
x = 30 + 21
x = 51 cm²
3)
x = area of semicircle + area of triangle
x = (1/2)(π)(4²) + 8(7)
x = 25.13 + 56
x = 81.13 ft²
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Answers & Comments
1)
x = Area of triangle - Area of rectangle
x = (1/2)(10)(13) - (8)(5)
x = 65 - 40
x = 25 in²
2)
x = area of rectangle_1 + area of rectangle_2
x = 5(6) + 7(3)
x = 30 + 21
x = 51 cm²
3)
x = area of semicircle + area of triangle
x = (1/2)(π)(4²) + 8(7)
x = 25.13 + 56
x = 81.13 ft²