Try and get the variable by its self by -81 from both sides then divide it by 7 and get ur answer.
Answer:
A = 27π cm² or about 84.8 cm²
Step-by-step explanation:
Area of a full circle is πR²
As there are four right angles making up a 360° turn, and the missing piece is one of those four, there are ¾ of a circle remaing
A = ¾πR² = ¾π6² = 27π cm² or about 84.8 cm²
Answer: 20
1) simplify 2^2 to 4
4*5
2) simplify
20