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
Answer:
The correct answer will be "-1.66".
Step-by-step explanation:
Let z₀ be,
⇒ 
Now,
⇒ 
Thus the above is the right answer.
If the diameter is 9 cm the radius is 4.5 cm (half the diameter). The area of a circle is given by the formula: 4πr^2, where π is the constant ratio of circumference to diameter (3.14159...).
3.14 cm x 4.5 cm = 14.13 cm^2. Remember, the units must be squared to represent area. 14.13 is extended to the nearest hundredth.
This is really hard to explain but i will try. The easiest one i see is 24 x 12, a good way to do it is by adding 12 to its self 24 times. the answer to that is 288.
