Compare the two numbers- 4.5×10^6 and 2.1×10^8?

I'm supposing you need to compare the numbers using >, <, or =  (If it isn't let me know)

4.5*10^6 is equal to 4500000.

2.1*10^8 is equal to 210000000.

210000000 is obviously bigger than 4500000.

Thus, 4.5*10^6 < 2.1*10^8

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)