Question

Find the perimeter of following compound shapes:
(i)9 cm
5 cm
3 cm
8 cm​

Answer 1

Answer:

Hint: Parameter of any shape is basically the center boundary of that shape.

The parameter of the triangle is the sum of its all sides. let us assumes sides of triangle area,b and c .hence,

perimeter =a +b +cperimeter =a +b +c

Perimeter of an equilateral triangle is 3a because in equilateral triangle all sides are same.

The perimeter of an isosceles triangle two of its sides are the same

Therefore,

Step-by-step explanation:

The perimeter of the triangle of sides 3cm,4cm and 5cm.

Perimeter of triangle== sum of all sides

= a+ b+c= a+ b+c -----(1)

Let a = 3cm, 4cm and c=5cm

Using them in 1

We got p= 3+4+5= 3+4+5

= 12cm= 12cm

Perimeter of an equilateral triangle = 3×side3×side

Side of equilateral triangle =9cm

Hence, perimeter == 3×3×9

=27cm=27cm

Perimeter of an isosceles triangle with equal sides 8cm and third side 6cm is 2a +b

Let a =8 and b=6

We have, perimeter =2×8+62×8+6

=16+6=16+6

=22cm=22cm