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yan [13]
3 years ago
7

Wich equation could be used to determine the area of a rectangle that is 9 cm long and 13 cm wide?​

Mathematics
1 answer:
Norma-Jean [14]3 years ago
4 0

Answer:

9×13=117, The rectangle is 117cm

Step-by-step explanation

The formula for a rectangle is L*W  

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Engineers and surveyors often determine distances that cannot be measured directly by using similar triangles like the ones show
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Step-by-step explanation:

See the diagram attached.

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I need help finding the lateral area and surface area of this cylinder but I have to leave π in my answer. Can anyone help?
Pani-rosa [81]
The lateral surface of a cylinder can be found with the equation 

A = 2 π r h          Substitute in your values.
A = 2 π (11) (7)   Multiply 11 and 7.
A = 2 π (77)        Multiply 77 and 2.
A = 154π            Don't simplify anymore so you can keep pi in the answer.

The surface are uses the equation
 
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A = 2 π (11) (7) + 2 π (11)²   Simplify and multiply your terms.
A = 2 π (77) + 2 π (11)²
A = 154 π + 2 π (11)²
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