Answer:
C and D
Explanation:
1
The arc length is calculated as
arc = circumference of circle × fraction of circle
= 2πr ×

= 2π × 10 ×
=
=
cm → C
-----------------------------------------------------
2
The area (A) of a sector is calculated as
A = area of circle × fraction of circle
= πr² ×

= π × 10² ×
=
=
cm² → D