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miguelturner
16.11.2020 •
Mathematics
Work out the area of a rectangle with base, b =
18mm and perimeter, P = 60mm.
b b
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Ответ:
Area of rectangle = 216 square mm
Step-by-step explanation:
Base (b ) = 18 mm
width = 'x' mm
Perimeter of rectangle = 2*(base + width)
Perimeter = 60 mm
2*(base + width) = 60 mm
2 *(18 + x ) = 60
2*18 + 2*x = 60
36 + 2x = 60
2x = 60 - 36
2x = 24
x = 24/2
x = 12
Width = 12 mm
Area of rectangle = base * width
= 18 * 12
= 216 square mm
Ответ:
62
Step-by-step explanation:
Turn the percentage into a decimal.
50% = 0.5
Divide.
31 / 0.5 = 62
Best of Luck!