Answer:
a) Perimeter = 20.5 Inches
Area is 15 Sq Inches
b) Perimeter is 61.4 Cms
Area is 210 Sq cm
c) Perimeter is 22 yards
Area is 21 Sq Yards
Step-by-step explanation:
a) Perimeter = sum of all the sides
= 8+7.5+5
=20.5
Perimeter = 20.5 Inches
Area of Triangle =[tex] \frac{1}{2} \times height \times Base[/tex]
Base = 7.5 In
Height = 4 In
[tex]A = \frac{1}{2} \times 4 \times 7.5[/tex]
[tex]A = 2 \times 7.5[/tex]
[tex]A = 15 [/tex]
Hence Area is 15 Sq Inches
b) Perimeter = Sum of all the sides
P=13+23+13.4+12
P=61.4
Perimeter is 61.4 Cms
Area of trapezium = [tex]\frac{1}{2} \times height \times (sum \ of \ parallel \ sides)[/tex]
[tex]A= \frac{1}{2} \times 12 \times (12+23)[/tex]
[tex]A= 6 \times 25[/tex]
[tex]A=210[/tex]
Area is 210 Sq cm
c) Perimeter = Sum of all the sides
P = 7+4+7+4 ( as Opposite sides are equal in a parallelogram
P = 22
Perimeter is 22 yards
Area of a parallelogram = [tex]base \times height [/tex]
[tex]A= 7 \times 3[/tex]
[tex]A = 21[/tex]
Area is 21 Sq Yards
