the anwser to b value is 777
FD/CA = EF/BC
x/(8.5 mm) = (12 mm)/(4 mm)
x = (8.5 mm)*(12/4)
x = 25.5 mm . . . . . . . . . . . the 3rd selection
1.
√(16+20)=√36=6
C
2.
√(21-9)=√(12)=(√4)(√3)=2√3
B
3. 2*√3=2*1.73205=3.464
B
1.C
2.B
3.B
34% of $68 dollars would equal $34
NAMASTE :)
0.00000000005
= 5 ×

Count the Digits after decimal.
We use minus (-) in power as the digit is in left side of decimal
If they are in right side then we use (+) plus sign in power.