All categories

3 years ago

Find the Perimeter of this shape. Can someone explain to me how to find the perimeter.

Mathematics

1 answer:

Agata [3.3K]3 years ago

3 0

The little lines in each side show that the sides are the same length but you also need to find the length of the smaller side which isn’t the same. For this imagine that the shape is split into a square and a triangle and you need to find the long side of the triangle using Pythagoras
a^2 + b^2 = c^2
20^2 + 20^2 = 800
Square root of 800 = 28.3
Then do 28.3-20=8.3
So I think the answer is 20+20+20+20+20+8.3=108.3 cm

You might be interested in

Work out <br> m<br> and <br> c<br> for the line:<br> y<br> =<br> 3<br> −<br> x

motikmotik

Answer:

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

PLEASE HELP

NeTakaya

Answer:

A rectangular prism in which BA = 20 and h = 6 has a volume of 120 units3; therefore, Shannon is correct

Step-by-step explanation:

step 1

Find the area of the base of the rectangular pyramid

we know that

The volume of the rectangular pyramid is equal to

$V=\frac{1}{3}BH$

where

B is the area of the base

H is the height of the pyramid

we have

$V=40\ units^{3}$

$H=6\ units$

substitute and solve for B

$40=\frac{1}{3}B(6)$

$120=B(6)$

$B=120/6=20\ units^{2}$

step 2

Find the volume of the rectangular prism with the same base area and height

we know that

The volume of the rectangular prism is equal to

$V=BH$

we have

$B=20\ units^{2}$

$H=6\ units$

substitute

$V=(20)(6)=120\ units^{3}$

therefore

The rectangular prism has a volume that is three times the size of the given rectangular pyramid. Shannon is correct

3 0

4 years ago

A grid of 100 squares shows 7 shaded squares what decimal number is represented

svp [43]

0.07

Step-by-step explanation:

This is because 7/100 is 7% and as a decimal is 0.07

Make me Brainlist

6 0

3 years ago

Mike spent half of his allowance going to the movies. He washed the family cat and earned $7. What is his weekly allowance if he

Natasha_Volkova [10]

16 - 7 is 9
9 x 2 is 18
His weekly allowance is 18

4 0

3 years ago

Solve the system of linear equations using the elimination method x=3y;3x-2y=14

vladimir1956 [14]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}x=3y&\text{subtract}\ 3y\ \text{from both sides}\\3x-2y=14\end{array}\right\\\\\left\{\begin{array}{ccc}x-3y=0&\text{multiply both sides by (-3)}\\3x-2y=14\end{array}\right\\\underline{+\left\{\begin{array}{ccc}-3x+9y=0\\3x-2y=14\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad7y=14\qquad\text{divide both sides by 7}\\.\qquad\qquad y=2\\\\\text{put the value of y to the first equation:}\\x=3(2)=6$

7 0

3 years ago