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Mathematics

2 answers:

sergeinik [125]2 years ago

4 0

Answer:

1:4

Step-by-step explanation:

Let's find the ratio of one side of Figure A to one side of Figure B. Note that the have to be the same side on each triangle (Ex: The short side and the short side or the medium length side and the medium length side or the long side and the long side)...

14:56

We can simplify this into...

1:4

Vesna [10]2 years ago

4 0

Answer:

1 : 4

Step-by-step explanation:

A : B = 14 : 56 = 1 : 4

7 : 28 = 1 : 4

16 : 64 = 1 : 4

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2. It is required to make a closed cylindrical tank of height 1 m and base diameter 140 cm

4vir4ik [10]

Answer:

It's required $7.48\ m^2$ of sheet for the tank

Step-by-step explanation:

Surface Area of a Cylinder

Given a right cylinder of base radius r and height h, the surface area is calculated as follows:

$S=2\pi r^2+2\pi r h$

The cylindrical tank has a height of h=1 m and a base diameter of 140 cm. The radius is half the diameter, thus r=140/2 = 70 cm = 0.7 m. Substituting:

$S=2\pi 0.7^2+2\pi (0.7)(1)$