Please give the answer .........
Attachments:

Answers
Answered by
0
Step-by-step explanation:
Answered by
12
GIVEN :-
- AB = 5 m.
- BC = 5 m.
- CD = 5 m.
- DE = 5 m.
- EF = 5 m.
- FG = 5 cm.
- GH = 5 m.
- HA = 5 m.
- HC = 11 m.
- AX = 4 m.
- FY = 4 m.
TO FIND :-
- The area enclosed by the octagonal figure.
SOLUTION :-
➠ Area (octagon) = Area (Trapezium ABCH ) + Area (Trapezium DEFG) + Area (Rectangle CDGH)
➠ Area (octagon) = 1/2 (AB + HC) × AX + 1/2 (DG + EF) × FY + (CH × CD)
➠ Area (octagon) = 1/2 (11 + 5) × 4 + 1/2 (11 + 5) × 4 + (11 × 5)
➠ Area (octagon) = 1/2 × 16 × 4 + 55 + 1/2 × 16 × 4
➠ Area (octagon) = 16 × 2 + 55 + 16 × 2
➠ Area (octagon) = 32 + 55 + 32
➠ Area (octagon) = 64 + 55
➠ Area (octagon) = 119 m²
Hence the area enclosed by the octagonal figure is 119 m².
Similar questions