+0  
 
0
81
3
avatar

Two rectangles are similar. One has a length of 10 cm and a width of 8 cm, and the other has a width of 7 cm. Find the length of the second rectangle. Round to the nearest tenth if necessary.

 Jan 15, 2020

Best Answer 

 #2
avatar+22108 
+2

7 is to 8     as   x is to 10

7/8 = x/10

x = 7/8 * 10= 70/8 = 8 3/4 cm

 Jan 15, 2020
 #1
avatar+122 
+1

If by similar you mean the area is the same then you find the area of the first.
10*8=80cm^2.

The second triangle then is 7*x=80 which can be rewritten as  x=80/7 => x=11.4.

 

 Jan 15, 2020
 #2
avatar+22108 
+2
Best Answer

7 is to 8     as   x is to 10

7/8 = x/10

x = 7/8 * 10= 70/8 = 8 3/4 cm

ElectricPavlov Jan 15, 2020
 #3
avatar
0

10 / 8 = 1.25

1.25 * 7 = 8.75

Ratio:    10 : 8 = 8.75 : 7

 Jan 16, 2020

27 Online Users

avatar
avatar