Answer:


Step-by-step explanation:
Given



Required
The size of
of height 
First, we calculate the width using the following equivalent ratios

Express as fraction

Solve for x


Hence:
--- approximated
So, we have:


The size (diagonal) is then calculated using:




--- approximated
I believe the answer is 21
Answer:
∠R = 30°
Step-by-step explanation:
Because QP = QR, it is an isosceles triangle. So ∠R = ∠P
Answer:
The number of small boxes is 9 and the number of large boxes is 3
Step-by-step explanation:
Let x be the number of large boxes.
The camp bought 3 times as many small boxes as large boxes, then the number of small boxes is 3x.
Each small box has 6 granola bars, then there are
granola bars in 3x small boxes.
Each large box has 12 granola bars, then there are
granola bars in x large boxes.
All boxes had 90 granola bars, so
