Ask question

Ask question

All categories

3 years ago

11

Find the perimeter of rectangle whose length is 40 and the diagonal is 41 cm

1 answer:

Bond [772]3 years ago

4 0

Answer:

<h2> P = 98 cm</h2>

Step-by-step explanation:

Given one side and diagonal of rectangle we can use Pythagorean theorem to calculate the other side of it.

$L=40\, cm\\D=41\,cm\\W=\ ?\\\\W^2+L^2=D^2\\\\W^2+40^2=41^2\\\\W^2+1600=1681\\\\W^2=81\\\\W=9$

Perimeter:

P = 2W + 2L = 2•40 + 2•9 = 80 + 18 = 98

You might be interested in

Roberto must make his costume for his school play. He needs a piece of fabric that is 2 2/3 yards long and 1 1/2 yards wide. Wha

erik [133]

Answer:

He will need 8.34 yards of fabric.

Step-by-step explanation:

Given that,

The length of the fabric, l = 2 2/3 yards = 8/3 yards

The width of the fabric, b = 1 1/2 yards = 3/2 yards

We need to find the piece of fabric Roberto needs. It is equal to the perimeter of the fabric such that,

$P=2(l+b)\\\\P=2(\dfrac{8}{3}+\dfrac{3}{2})\\\\P=2\times \dfrac{25}{6}\\\\P=8.34\ \text{yards}$

So, he will need 8.34 yards of fabric.

7 0

2 years ago

IM BEGGING YOU. PLEASE ANSWER ASAP

koban [17]

Increase = Going up.

Therefore Graph D is increasing. simply logic

5 0

2 years ago

Help me please summer homework

vladimir1956 [14]

86. Is a negative slope because it slants down from left to right.
87. Is positive slope because it slants up from left to right.
88. Is an undefined slope because it is vertical.
89. Is has a slope of zero because it is horizontal.

8 0

1 year ago

Solve. y=x−6 3x+2y=8 Use any method.

sertanlavr [38]

Answer:

The answer is x=4 and y=−2

7 0

2 years ago

Please help me I really really need help

postnew [5]

Answer:

$B) \sqrt{2}$ ÷ $2\sqrt{5}$

Step-by-step explanation:

$A$ → $2\sqrt{5}$ ÷ $\sqrt{5}$

$= \frac{2\sqrt{5} }{\sqrt{5} }$

<u>→ </u><u>2</u><u> is a rational number</u>

$B)$ → $\sqrt{2}$ ÷ $2\sqrt{5}$

$=\frac{\sqrt{2} }{2\sqrt{5} }$

$=\frac{\sqrt{2} }{\sqrt{2}*\sqrt{2}*\sqrt{5} }$

$= \frac{1}{\sqrt{10} }$

<u>↑ is irrational number</u>

$C)$ $\frac{\pi }{2}$ ÷ $\pi$

$= \frac{\pi }{2} *\frac{1}{\pi }$

$=\frac{1}{2}$

<u>↑ is a rational number</u>

$D)$ $5\pi$ ÷ $\pi$

$= 5$

<u>↑ is a rational number</u>

<u>So,</u><u> Option B</u><u> is your answer</u>

$-----------------$

hope it helps..

have a great day!!!

5 0

2 years ago