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Volgvan
2 years ago
9

Solve this problem please.

Mathematics
2 answers:
Annette [7]2 years ago
7 0

Answer:

Hi there!

The correct answer is: 21 m

Step-by-step explanation:

Using the law of cosine: ( c² = a²+ b² − 2ab cos(C) )

In this case the missing side BC, would be represented by "C"

c² = (6.5)² + (21.9)² - (2)(6.5)(21.9)cos(73.5)

simplify and you get c=21 m

enyata [817]2 years ago
4 0
So basically plus likes 21.9+73:5=let’s say 5 than your do 6.5+73.5=“788” then 21.9+6.5=“789” (those aren’t the real answers) you do that and do addition the 3 answers together and Multiple by 2
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Step-by-step explanation:

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The volume of the box is 8.217 cubic inches.

Step-by-step explanation:

Given : The open rectangular box of maximum volume that can be made from a sheet of cardboard 11 in. by 7 in. by cutting congruent squares from the corners and folding up the sides.

To find : The dimensions and the volume of the open rectangular box ?

Solution :

Let the height be 'x'.

The length of the box is '11-2x'.

The breadth of the box is '7-2x'.

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So, there is maximum at x=1.392.

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l=11-2(1.392)=8.216

The breadth of the box is b=7-2x

b=7-2(1.392)=4.216

The height of the box is h=1.392.

The dimension of the open rectangular box is 8.216\times 4.216\times 1.392.

The volume of the box is V=l\times b\times h

V=8.216\times 4.216\times 1.392

V=48.217\ in.^3

The volume of the box is 8.217 cubic inches.

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