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3 years ago

Helppppppppppppppppp!!!!!!!

Mathematics

1 answer:

cluponka [151]3 years ago

3 0

Answer:

C i believe

Step-by-step explanation:

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A cone has a circular base with a diameter of 18 inches the height of the cone is 40inches what is the approximate lateral area

arlik [135]

Answer:

$A=1158.66\ \text{inches}^2$

Step-by-step explanation:

Given that,

The diameter of the base of a circular cone, d = 18 inches

Height of the cone, h = 40 inches

We need to find the lateral surface area of the cone. The formula of the lateral surface of the cone is given by :

$A=\pi rl$

l is the slant height of the cone,

$l=\sqrt{r^2+h^2} \\\\l=\sqrt{(9)^2+(40)^2} \\\\l=41\ \text{inches}$ , d = 18 inches, r = 9 inches

So,

$A=3.14\times 9\times 41\\\\A=1158.66\ \text{inches}^2$

So, the lateral surface area of the cone is $1158.66\ \text{inches}^2$ .

8 0

4 years ago

Find the slope from the two points given: (0, -2) and (-6, 4)

kumpel [21]

Answer:

Step-by-step explanation:

here x1=0 y1=-2 x2=-6 y2=4

slope=y2-y1/x2-x1

=4-(-2)/-6-0

=4+2/-6

=6/-6

=-1

therefore slope=-1.

3 0

3 years ago

Please help or explain?

FrozenT [24]

Answer:

112degrees

Step-by-step explanation:

Alternate angles form a 'Z' shape and are sometimes called 'Z angles'. a and b are adjacent angles. Adjacent angles add up to 180 degrees. ... These add up to 180 degrees (e and c are also interior).

6 0

3 years ago

Paula skates 2 miles in 13 hour. How many miles does she skate in 1 hour?

lilavasa [31]

Answer:

2/13 of an hour

Step-by-step explanation:

3 0

3 years ago

By the square property, if b is a real number , and a2=b, then a=

Serggg [28]

Answer:

$a=\sqrt{6},\:a=-\sqrt{6}$

Step-by-step explanation:

Given

b is a real number

$a^2=b$

$\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}$

$a^2=6$

$a=\sqrt{b},\:a=-\sqrt{b}$

Therefore,

$a=\sqrt{6},\:a=-\sqrt{6}$

5 0

3 years ago

Read 2 more answers