Mathematics
WAEC 1989
The angle of a sector of a circle of diameter 8cm is 135°. Find the area of the sector [Take \(\pi\) = 22/7].
-
A.
\(9\frac{3}{7}cm^2\)
-
B.
\(12\frac{4}{7}cm^2\)
-
C.
\(18\frac{6}{7}cm^2\)
-
D.
\(25\frac{1}{7}cm^2\)
Correct Answer: Option C
Explanation
Area of a sector
\(\frac{θ}{360°} * πr^2\)
= \(\frac{135}{360} * 3.142 * 4 * 4\)
= \(18\frac{6}{7}cm^2\)
Report an Error
Ask A Question
Download App
Quick Questions
Contributions ({{ comment_count }})
Please wait...
Modal title
Report
Block User
{{ feedback_modal_data.title }}