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3 years ago

The diagram shows a cylindrical tanks.

Mathematics

2 answers:

guajiro [1.7K]3 years ago

7 0

Step-by-step explanation:

a.pi×30^2

b.pi×30^2×80

hope i helped

plss mark brainliest

zaharov [31]3 years ago

5 0

Step-by-step explanation:

Given, r = 30cm

h= 80cm

a) 

 $2\pi \times r {}^{2}$ 

=5654.867 cm²

b) volume of cylindrical tank

 $\pi {r}^{2} h$ 

=226194.671 cm2

 $1cm {}^{2} = 1ml$ 

=226194.671ml

=226.195litres

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Aneli [31]

Answer:

A=23.5 in^2

Step-by-step explanation:

d* $\pi$ *m*/360

A=16* $\pi$ *168/360

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4 years ago

The diagram represents a reduction of a triangle by using a scale factor of 0.8.

Alekssandra [29.7K]

Answer:

4.8 inches

Step-by-step explanation:

See comment for complete question

Represent the larger triangle with 1 and the smaller with 2.

So, we have:

$H_1 =6\ in$ -- height of 1

Required

Determine H2 --- Height of 2

To do this we apply dilation formula.

$Original * Scale\ Factor = New$

In this case:

$H_1 * Scale\ Factor = H_2$

Substitute 6 for H1 and 0.8 for Scale Factor

$6* 0.8 = H_2$

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3 years ago

A trail mix is made up of peanuts that cost p dollars per pound and dried fruit that costs d dollars per pound. A blend of 1/2 p

Cerrena [4.2K]

P is the cost of a pound of peanuts and F is the cost of a pound of dried fruit
0.5p+0.75f=6.5
0.75p+0.25f=4.5

Rearrange
0.5p=-0.75f+6.5

Simplify
P=-1.25f+13

Substitute
0.75(-1.25f+13)+0.25f=4.5

simplify
-0.9375f+9.75+0.25f=4.5
-0.6875f+9.75=4.5
-0.6875f=-5.25
f=7.636364

Round
F=$7.64 per pound

Plug in
0.75p+0.25(7.64)=4.5

Simplify
0.75p+1.91=4.5
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Round
P=$3.45 per pound of peanuts

Final
P=$3.45 per pound of peanuts
F=$7.64 per pound of dried fruit

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3 years ago

Read 2 more answers

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seraphim [82]

Answer:

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Step-by-step explanation:

Use Y2-Y1/X2-X1

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