Answer: The right answer is A. 8.4
Explanation:
To determine the height of the shadow of the picture frame, we can set up a proportion using the given information.
Let "x" represent the height of the shadow of the picture frame. We can set up the proportion as follows:
Height of Pen Holder / Length of Pen Holder's Shadow = Height of Picture Frame / Length of Picture Frame's Shadow
Plugging in the values we know:
8.3 cm / 10 cm = 7 cm / x
To solve for "x," we can cross-multiply and then divide:
(8.3 cm)(x) = (10 cm)(7 cm)
8.3x = 70 cm^2
x = 70 cm^2 / 8.3
x ≈ 8.43 cm