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podryga [215]
3 years ago
9

(3.4 x 10^-6) - (8.3 x 10^-6)

Mathematics
1 answer:
In-s [12.5K]3 years ago
6 0

Answer:

= -0.0000049

Step-by-step explanation:

(3.4×0.000001) - (8.3×0.000001)

0.0000034-0.0000083= -0.0000049

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the surface area of a cuboid is 95cm² and its lateral surface area is 63cm². find the area of its base​
wel

Answer:

The Area of the base is 16 cm² .

Step-by-step explanation:

Given as :

The surface area of the cuboid = x = 95 cm²

The lateral surface area of the cuboid = y = 63 cm²

Let The Area of the base = z cm²

Now, Let The length of cuboid = l cm

The breadth of cuboid = b cm

The height of cuboid = h cm

<u>According to question</u>

∵ The surface area of the cuboid = 2 ×(length × breadth + breadth × height + height × length)

Or, x = 2 ×(l × b + b × h + h × l)

Or, 95 =  2 ×(l × b + b × h + h × l)

Or,  (l × b + b × h + h × l) = \dfrac{95}{2}          ....1

<u>Similarly</u>

∵lateral surface area of the cuboid = 2 ×(breadth × height + length × height)

Or, y = 2 ×(b × h + l × h)

Or, 2 ×(b × h + l × h) = 63

Or, (b × h + l × h) = \dfrac{63}{2}              ......2

Putting value of eq 2 into eq 1

so,  (l × b +  \dfrac{63}{2} ) = \dfrac{95}{2}    

Or, l × b = \dfrac{95}{2} - \dfrac{63}{2}    

Or,  l × b = \dfrac{95 - 63}{2}

i.e l × b = \dfrac{32}{2}

so, l × b = 16

<u>Now, Again</u>

∵The Area of the base = ( length × breadth ) cm²

So, z =  l × b

i.e z = 16 cm²

So, The Area of the base = z = 16 cm²

Hence,The Area of the base is 16 cm² . Answer

5 0
3 years ago
Find the diameter of a circle with the known circumference of 314” use the formula d= C
siniylev [52]

The complete formula for circumference is:


C=\pi d


Since we know the circumference of the circle is 314 inches, we can then solve for d, the diameter:


314=\pi d


Using 3.14 for pi, we get:


314=(3.14)d


Then solve for d:


d=100


And now we know the diameter of the circle is 100 inches.

4 0
3 years ago
Giant is selling Cereal at $8 for 3 boxes.what is the cost per box?
Zolol [24]

Answer:

$2.67

Step-by-step explanation:

you divide to find unit rate

8/3 = 2.666667

7 0
3 years ago
Read 2 more answers
What is the arc measure of DBC in degree
aliya0001 [1]

The length of both AB and DC is the same.

19 degrees

We want to know the arc measure for the whole circle, except for DC. So, we can subtract the arc measure of DC from 360 to find DBC. Since we found DC above, all we need to do is subtract.

360 - 19 = 341

DBC = 341 degrees

Hope this helps!! :)

8 0
3 years ago
Please answer this question, I will mark brainlest
adoni [48]

Answer:

B: 12

Step-by-step explanation:

length of one side =150

length of one path =12.5

Number of patches= 150 / 12.5

Number of patches = 12

hope it helps

please mark me as brainliest

5 0
2 years ago
Read 2 more answers
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