Question 2 of 30
2 answers:
You might be interested in
Answer:
13. 9.77 inches (rounded to 3 s.f.)
14. 249m² (rounded to 3 s.f.)
Step-by-step explanation:
13. To find the arc length, the formula is the angle of the arc out of 360° multiplied by the circumference of the full circle. Circumference of circle: pi × r × 2
× pi × 7 × 2 = 3
pi
= 9.77 inches (rounded to 3 s.f.)
14. To find the sector area, the formula is the angle of the sector out of 360° multiplied by the area of the full circle. Area of circle: pi × r × r
× pi × 10 × 10 = 79
pi
= 249m² (rounded to 3 s.f.)
<h2>Answer</h2>
The answer to this question is 0.9
<h2>Explanation</h2>We know that
sequre of 9 is equal to 81 as
Then sequre of 0.9 will be
So,
b =
b =
Exponent and square root cancel out each other
So, the answer is 0.9.