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Flauer [41]
3 years ago
12

PWEASE HELP ME THIS IS SO HARD!

Mathematics
2 answers:
umka2103 [35]3 years ago
7 0

Answer:

The answer is C

Step-by-step explanation:

Tema [17]3 years ago
5 0

Answer:

the answer to this question is c

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Find the area of the triangle <br> A. 107.1 <br> B. 214.2 <br> C. 306.8 <br> D.410.3
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A. 107.1

Step-by-step explanation:

The area of a triangle = 1/2bh

where b is the base and h is the height

by substitution:

Area = 1/2 × (34) × (6.3) = 107.1

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The width of a photograph is 4 centimeters more than three tenths of the length. If the width is 13 centimeters, what’s the leng
Nesterboy [21]

Answer:

30 centimeters

Step-by-step explanation:

since the width is 4 centimeters more than 3/10 of the length, then 13 is 4 centimeters more than 3/10 of the length. 4 less than 13 is 9, so nine is 3/10 of the length. if 9 is 3/10, then 3 is 1/10 because 3/10 is three times 1/10. If 3 is 1/10, that means that 30 is the length because 1/10 multiplied by 10 is 10 tenths, or 1.

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3 years ago
A cone and a cylinder have the same height and their bases are congruent circles
Anettt [7]

Answer:

30cm^3

Step-by-step explanation:

the volume of a cylinder is given by:

v_{cylinder}=\pi r^2 h

and the volume of a cone is given by:

v_{cone}=\frac{\pi r^2 h}{3}

since both have the same height and radius, we can solve each equation for r^2h (because this quantity is the same in both figures) and then match the expressions we find:

from the cylinder's volume formula:

r^2h=\frac{v_{cylinder}}{\pi}

and from the cone's volume formula:

r^2h=\frac{3 v_{cone}}{\pi}

matching the two previous expressions:

\frac{v_{cylinder}}{\pi} =\frac{3v_{cone}}{\pi}

we solve for the volume of a cone v_{cone}:

v_{cone}=\frac{\pi v_{cylinder}}{3\pi} \\\\v_{cone}=\frac{v_{cylinder}}{3}

substituting the value of the cylinder's volume v_{cylinder}=90cm^3

v_{cone}=\frac{90cm^3}{3} \\\\v_{cone}=30cm^3

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