2
Question
If P - Q - R and d(Q,R) = 12 units, d(P,R) = 30 units, then d(P,Q) = ________ units.
- 18
- 18
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Solution
The correct option is A 18
Given,
P - Q - R , which means point Q is between P and R.
d(Q,R) = 12 units and d(P,R) = 30 units
From the figure,
d(P,Q) + d(Q,R) = d(P,R)
⇒ d(P,Q) + 12 = 30
⇒ d(P,Q) = 30 - 12
∴ d(P,Q) = 18 units
Given,
P - Q - R , which means point Q is between P and R.
d(Q,R) = 12 units and d(P,R) = 30 units
From the figure,
d(P,Q) + d(Q,R) = d(P,R)
⇒ d(P,Q) + 12 = 30
⇒ d(P,Q) = 30 - 12
∴ d(P,Q) = 18 units
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