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3 years ago

The inner dimensions of a cuboidal wooden box are 30cm x 20cm x 10cm and its outer dimensions

Mathematics

1 answer:

son4ous [18]3 years ago

4 0

Answer:

332.2g

Step-by-step explanation:

30 x 30 x 10 = 9000

32 x 22 x 12 = 8448

9000 - 8448 = 552

552 x .6 = 332.2g

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PLEASE HELP!

IrinaVladis [17]

Answer:

Step-by-step explanation:

<h3>Sphere:</h3>

1) a) r = 7 cm

$\sf \boxed{\text{Volume of sphere=$\dfrac{4}{3}\pi r^3$}}$

$\sf =\dfrac{4}{3}*3.14*7*7*7\\\\= 1436 \ cm^3$

$\sf \boxed{\text{\bf Surface area of sphere = $4\pi r^2$}}$

= 4*3.14 * 7 * 7

= 615.44 cm²

b) r= 8.4 cm

$Volume = \dfrac{4}{3}\pi r^3$

$\sf =\dfrac{4}{3}*\dfrac{22}{7}*8.4*8.4*8.4\\\\= 2483.7 \ cm^3$

Surface area = 4*3.14*8.4*8.4

= 887.04 cm²

<h3>Hemisphere:</h3>

a) r = 6 cm

$\sf \boxed{\text{\bf Volume of hemisphere =$\dfrac{2}{3} \pi r^3$}}$

$\sf =\dfrac{2}{3}*3.14*6*6*6\\\\= 452.16 \ cm^3$

$\sf \boxed{\text{\bf Surface area of hemisphere=3 \pi r^2}}$ $\sf \boxed{\text{\bf Surface area of hemisphere = $3 \pi r^2$}}$

= 3 * 3.14 * 6 * 6

= 339.12 cm²

3 0

2 years ago

Someone help me?????

ziro4ka [17]

Step-by-step explanation:

4. b 612 (72/100) x 850)

5. c. 275 (33/100) x 835

6. b. 39% (3.24 - 2.85) x100%)

8 0

2 years ago

X+2 = 7/8 mulltiplied by -15x

Marysya12 [62]

Answer:

x=16/113

Step-by-step explanation:

look at them in order

3 0

2 years ago

3-(2x-5) +4<br><br> 4 +6(x+3)-(x-2)+7<br><br> -4x(x-2)+3-(6-2x)

Dvinal [7]

Answer:

1st solution is -2x+12

2nd solution is 5x+31

3rd one doesnt have a solution

Step-by-step explanation:

4 0

2 years ago

A baseball and a bat cost 110 dollars. If the bat costs 100 more dollars than the ball, is much does the ball cost

aliya0001 [1]

Answer:

$10

Step-by-step explanation:

So the total amount of money needed is $110

And the bat is $100 more than the ball

So basically subtract $100 from $110

And you get $10 So the answer is $10

4 0

3 years ago