Urgent math !
which shows the conversion of 0.21 millimeters to inches?
there is 0.03937 inch in 1 millimeter.
a.
0.21 mm × 0.03937 in./mm = 0.0083 inches
b.
0.21 mm + 0.03937 in./mm = 0.24937 inches
c.
0.21 mm ÷ 0.03937 in./mm = 5.34 inches
d.
0.21 mm × 0.03937 in./mm = 8.3 × 10^-2 inches

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How many triangles can be drawn with side lengths 4 centimeters, 4.5 centimeters, and 9 centimeters? explain

Answer pls man im trying to get out of summer school