31.4/3.14=10
10/2=5
5*5*3.14= 78.5 cm square
Answer:
Option b.
Step-by-step explanation:
we have

Evaluate

therefore
He did not apply the power to the denominator of 3/5
Answer:
2.79166666667
Step-by-step explanation:
Answer:
x=8
Step-by-step explanation:
2(x+4) - 10 =14
distribute the 2 2x +8 -10 +14
simplify 2x-2=14
add 2 2x=16
devide by 2 x=8