Helen told her mom she got 85% on a recent math test. She remembered the test was out of 60. What was her actual mark? *

Mathematics

1 answer:

barxatty [35]2 years ago

8 0

Answer: 85% out of how many questions.

Step-by-step explanation:

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For the perimeter you have to consider the EXTERNAL SHAPE ONLY:

a) the perimeter of half a circle WITHOUT ITS DIAMETER is:
π.R - 2R → 3.14x1.5 - 2x1.5 → 1.71 cm

b) the perimeter of the rectangle WITHOUT THE UPPER SIDE is:
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Hence the perimeter of the figure is 1.71 + 8 = 9.71 cm

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Area of rectangle = 2.5 x 3 = 7.5 cm²
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