Question

answer me I will make you the brainliest​

Answer 1

Answer:

120.71

Step-by-step explanation:

A=2(1+2)a2=2·(1+2)·52≈120.71068

PLS BRAINLIEST

Answer 2

Answer:

The answer given by @aaron is incorrect. ok here is your right answer.

solution:- Area of Octagon ABCDEFGH

= area(trap. ABCH) + area(trap.CHGD) + area(trap. DGFE)

= 2×ar(trap.ABCH) + ar(trap. CHGD)

$= (2 \times \frac{1}{2} \times (ab + hc) \times al) + (hg + hc)$

= [{(5+11) × 4} + (5×11)] cm^2

= (64+55)cm^2

= 119cm^2