Answer:
16
Step-by-step explanation:
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P=156 cm
l=6+5w
P=2(l+w)
156=2(6+5w+w)
156=2(6+6w)
156=12+12w
12+12w=156
12w=156-12
12w=144
w=12cm
l=6+5•12
l=6+60
l=66cm
4(m + 2) expanded is 4 x m and 4 x 2
simplified: 4m + 8
Answer:

Step-by-step explanation:
OPQ is a right angle triangle.
<u>Using Pythagoras</u>

<u>Using quadratic formula</u>
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OR
(Length can't be negative)
∴ 