Answer:
R=√a/3
now put square on both side to remove square root
(√A/3)²=R²
A/3=R²
so we get
A=3(R²)
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Ten x plus four divided by seven
2x+x-7+3x-20=87cm
6x-27=87
6x=114
x=19
Therefore the sides are:12cm, 38cm, and 37cm
Answer:
⊥
Step-by-step explanation:
d and b meet at a 90 degree angle ( as shown by the box)
The lines are perpendicular (⊥)