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3 years ago

How would I solve this? I do not get the problem.

Mathematics

1 answer:

Stolb23 [73]3 years ago

8 0

Find the area of the CD. (I used P for pi, too lazy @[email protected])
A=Pr² - Pr²
radius of the small hole in the middle, 0.75cm
radius of the CD, 6cm
A=3.14*6²-3.14*0.75²
A=111.27375cm²
The Approximate area of the CD is 111.27cm²

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3 years ago

Mona drove 40 miles per hour how long will it take Mona to drive 100 miles

seraphim [82]

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2,5h

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3 years ago

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3 years ago

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valina [46]

Answer:

Step-by-step explanation:

Volume of a cone is given by the formula,

V = $\frac{1}{3}\pi r^{2}h$

Here, r = Radius of the circular base of the cone

h = Height

By substituting values from the question,

V = $\frac{1}{3}\times \pi (\frac{6}{2})^2(3)$

V = 9π

V = 28.27 m³ [Nearest hundred]

If we have to round the answer to the nearest tenth, answer will be,

Volume = 28.3 m³

If we have have to round the answer to the whole number then the answer will be,

Volume = 28 m³

8 0

3 years ago

The length of a rectangular frame is 8 cm more than the width. The area inside the frame is 65 square cm. Find the width of the

fgiga [73]

L+8=W
L*W=65
sub W from the first equation to second one
L*(L+8)= 65
L^2+8L =65 L^2+8L -65 =0 L=-13 and L=5, length cannot be negative so L=5 is the answer
sub this value in the first equation W=13

8 0

3 years ago