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IceJOKER [234]
3 years ago
9

How many tiles of dimension 22.5 cm x 10 cm x 7.5 cm can be painted if the paint is sufficient for the surface area 2812.50 m2 (

meter sq.)
Mathematics
1 answer:
fenix001 [56]3 years ago
8 0

Answer:

30 000 tiles

Step-by-step explanation:

Firstly convert the dimensions into metres

Then find the total surface area for one tile...in its....;

T.Surface area = 2(0.225 × 0.1) + 2(0.1 × 0.075) + 2(0.225 × 0.075)

Total surface area of one tile = 0.09375m^2

Then divide it into the surface area that the paint can be applied to....

2812.50 ÷ 0.09375 = 30 000 tiles

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ValentinkaMS [17]

Step-by-step explanation:

hope it is helpful to you

7 0
2 years ago
What is the approximate radius of a sphere with a volume of 1436cm to power of 3
Margarita [4]

Answer:

<h3>The radius is 7 cm</h3>

Step-by-step explanation:

Volume of a sphere is given by

V =  \frac{4}{3} \pi {r}^{3}

where r is the radius

From the question V = 1436 cm³

1436 =  \frac{4}{3} \pi {r}^{3}

Multiply through by 3

We have

4308 = 4\pi {r}^{3}

Divide both sides by 4π

{r}^{3}  =  \frac{4308}{4\pi}

{r}^{ 3}  =  \frac{1077}{\pi}

Find the cube root of both sides

r =  \sqrt[3]{ \frac{1077}{\pi} }

r = 6.99

We have the final answer as

<h3>r = 7cm</h3>

Hope this helps

3 0
3 years ago
Part A). Emily participates in a trivia quiz show. In each round, 20 points are awarded for a correct answer and 10 points are d
rosijanka [135]

Answer

A. -30 points

B. 60 points

Step-by-step explanation:

20 points for correct answer and 10 points deducted for wrong answer

Each deduction is -10 while each correct answer gives + 20

4 questions correctly and 11 incorrectly

= 4(20) + 11(-10)

= 80-110 = -30 points

Second round

7 correct, 8 incorrect

= 7(20) - 8(10)

= 140-80 = 60 points

4 0
3 years ago
Which matrix represents the solution to this system of equations?
Xelga [282]

Answer:

1. b

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the value of x. Round the length to the nearest tenth.
Virty [35]

Answer:

5.1

Step-by-step explanation:

tan \ 25 = \frac{opposite \ side}{adjacen \ side}\\\\tan \ 25 =\frac{x}{11}\\\\0.4663 =\frac{x}{11}

0.4663 * 11 = x

x = 5.1293

x = 5.1

7 0
3 years ago
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