3 years ago

I need help please ..

Mathematics

1 answer:

koban [17]3 years ago

4 0

A is 18

B is 162

C is 18

D is 162

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The volume of a cone varies jointly with the area of the base and the height. When the area of the base is 27 cm2 and the height

Tomtit [17]

Cone=cup:
V=124<span>cm^3.
h=12cm
V=Bh
P=r</span>^2π+rsπ:
B=r^2π
B=V/h=124/12=10,3cm^2
r^2=B/π
r=√(B/π)=1,81 cm
S=√(r^2+h^2)=√(12^2+1.81^2)=√(144+3,28)=12,13 cm
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3 years ago

Can u help me. if answer is correct, i will give u brainliest

den301095 [7]

Answer:

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Step-by-step explanation:

The area (A) of a parallelogram is calculated as

A = bh ( b is the base and h the perpendicular height )

To calculate h use Pythagoras' identity on the right triangle on the left

h² + 8² = 17²

h² + 64 = 289 ( subtract 64 from both sides )

h² = 225 ( take the square root of both sides )

h = $\sqrt{225}$ = 15 , thus

A = 9 × 15 = 135 units²

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3 years ago

A painter charges by the square foot and charges you $1,875 to paint a 750 square foot rental house. If you need 1300 square foo

Stella [2.4K]

In this question , it is given that

A painter charges by the square foot and charges you $1,875 to paint a 750 square foot rental house.

For 750 square foot, he charges $1875.

So for 1 square foot, he charges

$= \frac{1875}{750} = $2.50 \ \per \ square \ foot$

And for 1300 square foot, he charges

$= 2.50*1300 = $3250$

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Answer:

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