Step-by-step explanation:
we know all 3 values of trapezium length. so let's find out the circumference of half circle
circumference of circle= 2pi r
circumference of half circle = (180/360)× 2pi r
therefore it's equal to pi r
circumference = 22/7 ×2 (diameter is 4 so radius is 2)
circumference of half circle = 44/7
Total perimeter of the figure= 8+6+6+(44/7)
=20 + 6.28
= 26.28
Round of to nearest tenth place = 26.3