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marishachu [46]
3 years ago
6

Mary wants to make a box she starts with a piece of cardboard whose length is 15cm and width is 10cm then she cuts them in congr

ats square with side 3cm at he four comes what is the area of the cardboard after she cuts the 4 comes
Mathematics
1 answer:
ss7ja [257]3 years ago
4 0

Answer:

V = 108 cm^3

the volume of the box is 108 cm^3

Corrected question;

Mary wants to make a box. She starts with a piece of cardboard whose length is 15 centimeters and width is 10 centimeters. Then she cuts 4 congruent squares with sides of 3 centimeters at the four corners and folded at the broken lines to make the box. What is the volume of the box?

Step-by-step explanation:

The volume of a box V is;

V = length × breadth × height

V = l×b×h ......1

Length l of the box that would be formed after cutting squares with sides 3 cm from the edges of a cardboard of length 15 cm is;

l = 15 - 2(3) = 9 cm

Breadth b of the box that would be formed after cutting squares with sides 3 cm from the edges of a cardboard of breadth 10 cm is;

b = 10 - 2(3) = 4 cm

Height of the box is the length of the squares cut;

h = 3 cm

Substituting the values into equation 1;

V = 9 × 4 × 3 cm^3

V = 108 cm^3

the volume of the box is 108 cm^3

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Answer:

see below

Step-by-step explanation:

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15+5x  where x is the number of people

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20+3x

We have 50 dollars so the amount must be less than or equal to 50

Bowling

15+5x≤50

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15-15+5x≤50-15

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5x/5 ≤35/5

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Skating

We have 50 dollars so the amount must be less than or equal to 50

20+3x  ≤50

Subtract 20 from each side

20-20+3x  ≤50-20

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8 0
3 years ago
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How many centimeters long is a leg of an isosceles right triangle if its hypotenuse has a length of 8√2 centimeters?
andrew-mc [135]

Answer:

The leg is 8 cm long

Step-by-step explanation:

An isosceles right triangle has the length of its hypotenuse and opposite equal

Let us call the length x

From Pythagoras’ , the square of the hypotenuse equals the sum of the squares of the two other sides

Thus, we have ;

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7 0
3 years ago
If $17,000 is invested in an account for 25 years. Calculate the total interest earned at the end of 25 years if the interest is
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Answer:

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Step-by-step explanation:

a.) Formula: I = p x r x t

Where:

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t is the time involved, 25....year(s) time periods.

So, t is 25....year time periods.

To find the simple interest, we multiply 17000 × 0.07 × 25 to get that:

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______________________________

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