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3 years ago

The cost of a pool cover depends on its area use the picture to find the area of the pool 30 50 25 10 5 40

Mathematics

1 answer:

jolli1 [7]3 years ago

4 0

The area of the pool is 1300 m^2.

Break the pool into two rectangles, and add there areas together.

5 x 10 = 50

50 x 25 = 1250

1250 + 50 = 1300

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Cylinders A and B are similar. The volume of cylinder A is 20mm3. Calculate the volume of cylinder B.

MrRa [10]

The question is incomplete. The complete question is :

Cylinders A and B are similar. The length of the cylinder A is 4 mm and the length of cylinder B is 6 mm. The volume of cylinder A is 20mm3. Calculate the volume of cylinder B.

Answer:

67.5 $mm^3$

Step-by-step explanation:

Given that :

Cylinder A and cylinder B are similar.

Let volume of cylinder A = 20 $mm^3$

We know the volume of a cylinder is given by V = $\pi r^2 h$

where, r is the radius of the cylinder

h is the height of the cylinder

We have to find the scale factor.

The length scale factor is = $\frac{6}{4}$

$=\frac{3}{2}$

Area scale factor $=\left(\frac{3}{2}\right)^2$

$=\frac{9}{4}$

∴ Volume scale factor $=\left(\frac{3}{2}\right)^3$

$=\frac{27}{8}$

Therefore, the volume of cylinder B is $=20 \times \frac{27}{8}$

= 67.5 $mm^3$

5 0

3 years ago

Can anyone answer this?<br> x+1<5

Sliva [168]

X + 1 < 5
x < 5 - 1
x < 4

u basically solve it like equations except for one important rule....with inequalities, when u multiply/divide by a negative number, the inequality sign changes directions. But we didn't have to deal with that rule in this particular problem

5 0

3 years ago

Express the repeating decimal 2.7 as a fraction.

sergeinik [125]

2/9 is the answer broski

8 0

2 years ago

Malik buys and sells car parts. He bought two tires for $45.00 each and later sold them for $65.00 each. He bought three rims fo

Aleksandr [31]

Malik earned $243.

When he bought the tires, he spent $90 ($45x2), and he sold them for $130 ($65x2). So his profit was $40 ($130-$90).

He bought three rims for $225 ($85x3) and sold them all for $378 ($126x3). His profit was $153 ($378-$225).

The headlight covers cost him $25 in total ($5x5). He sold them all and got $75 ($15x5). The profit was $50 ($75-$25).

The total amount of money made was $243 ($40+$153+$50).

:)

3 0

3 years ago

Read 2 more answers

What is the perimeter of the framed picture in terms of x? ( x + ) inches

Marysya12 [62]

Answer:

jjytrewasxcfgyuikjyt45678ijhgfgn

Step-by-step explanation:

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3 years ago