Answer:
12.6 m^2
Step-by-step explanation:
area of sector = 90/360 × 3.14 × 4^2
= 12.56
to the nearest tenth = 12.6 m^2
Answer: (B) 8 cm
Step-by-step explanation:
A triangle has 3 sides.
In order for it to be a triangle, the sum of sides a and b must be greater than the length of side c.
Testing (A) 7cm:
7 + 9 > 16
16 > 16
False
Testing (B) 8cm:
8+9 > 16
17 > 16
True
Testing (C) 25cm:
9 + 16 > 25
25 > 25
False
Testing (D) 26cm:
9 + 16 > 26
25 > 26
False
√(-4-12)^2+(1-1)^2= √(-16)^2+0= √16^2=16
Answer is the last option: 16 units
Answer:
Step-by-step explanation:
<em>We use the rule 
to first simplify this:</em>
<em>Now we use the rule 
we simplify further and find the answer:</em>
The third answer choice is right.
