Question

perimeter equalto 12cm breath equalto 18cm​

Answer 1

Answer:

Step-by-step explanation:

Perimeter of rectangle = Perimeter of regular pentagon

⟹2(l+b)=5a

⟹2(18+12)=5a

⟹60=5a

⟹a=

5

60

​

∴a=12 cm

i.e., Side of regular pentagon =12 cm

Answer 2

Answer:

Perimeter of rectangle = Perimeter of regular pentagon

⟹2(l+b)=5a

⟹2(18+12)=5a

⟹60=5a

⟹a= 60÷5

∴a=12 cm

i.e., Side of regular pentagon = 12cm.