Answer:
Height of the object is 68.6 cm.
Step-by-step explanation:
The height of the object can be determined by:
= 
From the given question;
object distance from pinhole = 3.6 m = 360 cm
image distance from pinhole = 4.2 cm
height of image = 0.8 cm
So that;
= 
⇒ object height = 
= 
= 68.571
object height = 68.6 cm
Thus, the height of the object is 68.6 cm.
Answer:
y = 4
Step-by-step explanation:
Use the distributive property to multiply all terms in the parentheses by 4
You will get (8 - 8 + 4y) = 0
Then, 4y = 0
Divide each side by 4 to get
y = 4
Answer:
11
Step-by-step explanation:
it's 10 because on the image it gives you the 7 which would be the top half of the side and the 4 would be the bottom so you just and then and get 11
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