Answer:
64
mm² or approximately 201.06 mm²
Step-by-step explanation:
If the diameter is 16 mm, the radius will be 8 mm.
Use the circle area formula, A =
r², where r is the radius. Plug in 8 as r:
A =
r²
A =
(8²)
A = 64
So, the area of the circle is 64
mm² or approximately 201.06 mm²
Answer:
20 cm
Step-by-step explanation:

1. Multiply the actual depth my the scale factor of 1/15.
2. Multiply the resulting depth after multiply by the scale factor by the conversion factor of meters to centimeters.
<span> Do you mean this one? </span>∑
It is summation.
142=120% of x
120% of x= 1.2x
142=1.2x
142/1.2 = 1.2x/1.2
x= 118.33
The unknown number should be 118.33, rounded to 118 or so.