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2 years ago

A rectangle has a perimeter of 20 cm. What will the perimeter be if the rectangle tripled in size?

Mathematics

1 answer:

marusya05 [52]2 years ago

3 0

Answer:

Step-by-step explanation:

Holding the perimeter fixed, the shape with greatest area is square ( all sides of the same) length) For your name example a square with a perimeter of 20 cm has sides of 5 cm and area of 5 times 4=20 cm) ^3 hope this helps

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Angles X and Y are supplementary. Angle X is 3 times the measure of angle Y. What is the measure of angle X?

Andreas93 [3]

we know that

Supplementary angles are those angles whose sum is equal to $180$ degrees

In this problem

$x+y=180$ --------> equation $1$

$x=3y$ --------> equation $2$

Substitute the equation $2$ in equation $1$

$[3y]+y=180$

$4y=180$

$y=45$ °

Find the value of x

$x=3*45$

$x=135$ °

therefore

the answer is

The measure of angle x is $135$ °

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Answer:

Step-by-step explanation:

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(5×8 - 1)° + 74° + m∠2 = 180°

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Step-by-step explanation:

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