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3 years ago

Max runs 3 laps around the track in 8 min. How many minutes per lap is that?

Mathematics

1 answer:

ICE Princess25 [194]3 years ago

3 0

Answer:

Step-by-step explanation:

8/3 = 2.6666 (repeating 6)

so rounded about 2.7 minutes per lap :)

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Need help please <br> find the area of the shape below

Tanzania [10]

Answer:

$198.5\ cm^2$

Step-by-step explanation:

Break the figure in three parts as shown in the image I attached.

The figure makes 2 semi circles and 1 rectangle so,

Area of rectangle = Length x breadth

Area of rectangle = 12 x 10

Area of rectangle = 120

Now for the semi circles , we have 2 semi-circles which means area of both semi circles would be

Area of semi circle = $\frac{1}{2} \pi r^2\\$

so, Area of two semi circles would be = $(\frac{1}{2} \pi r^2)2$

so, Area of two semi circles would be = $\pi r^2$

now for the radius we know that,

Diameter = 2 x radius

D = 2r

and the diameter is 10cm so,

10 = 2r

10/2 = r

r = 5cm

so we put r = 5 in the formula ,

$Area\ of\ two\ semi\ circles\ = \pi r^2\\Area\ of\ two\ semi\ circles\ =\pi (5)^2\\Area\ of\ two\ semi\ circles\ =25\pi \\Area\ of\ two\ semi\ circles\ =78.5\ cm^2$

So now the total area of the figure is

Total Area = Area of rectangle + Area of two semi circles

Total Area = 120 + 78.5

Total Area = 198.5 cm^2

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