find the perimeter of each of the following figures
Answers
Step-by-step explanation:
Perimeter of rectangle=2(l+b)
=2(20+8.4)
=2×28.4cm
=56.8cm
d=8.4cm
r=8.4/2=4.2cm
Perimeter of half circle=2πr/2
=πr
=22×4.2/7
=22×0.6
=13.2cm
Perimeter of full circle=(13.2 + 13.2)cm
=26.4cm
Total perimeter of given figure=perimeter of both circle + perimeter of rectangle
=(56.8+26.4)cm
=83.2cm
I think it will help you.☺️
Answer:
38.0m
Step-by-step explanation:
Given: Total length= 20m
Diameter of semi circle= 8.4m
radius of semi circle= 8.4/2= 4.2m
length of rectangle field= 20-(4.2+4.2)= 11.6m
breath of the rectangle field= 7m
Area of rectangle field= l×b ,= 11.6×8.4=97.44m²
area of two semi circle= 2×1/2×22/7×4.2×4.2=
=55.44 m²
Area of garden= 97.44+55.44= 153.88m²
now- Perimeter of two semi circle= 2πr²
= 2×22/7× 4.2= 26.4 m
And- Perimeter of Garden= 26.4+11.6 = 38.0 m