Answer:
1. 15.72m²
2. 48dm²
3. 4m²
Explanation:
1.
area of unshaded circle=
r=3m. πr^2. (22/7)×3×3= 28.29
area of shaded circle
radius= total radius- unshaded circle radius
r=5m-3m = 2m
Area= πr^2. (22/7)×2×2= 12.57
therefore area= unshaded-shaded
28.29-12.57= 15.72
2.
area of unshaded= area of square = L²
8×8=64
area of shaded= length= 8-2-2= 4
4×4= 16
total area =
64-16= 48
3.
area of triangle= (b×h)/2
(7×6)/2= 42/2= 12
area of rectangle= L×b
4×2= 8
area=12-8= 4