Question

Please answer 17 and 18 questions in the question paper

Answer 1

Answer:308 cm..

Step-by-step explanation:All sides of a regular pentagon are equal.. Therefore,

Perimeter of regular pentagon=5a

(where a is the side)

1540=5a

a=308 cm...

Answer 2

Answer:

17) Given:

perimeter of a regular pentagon =1540

5×length of each side=1540

Therefore , length of each side=1540/5=308

18) Let the breadth of the rectangle be X cm

length of the rectangle=3x

given that , perimeter of the rectangle=40 cm

we know that , perimeter of rectangle =2( length

+ breadth )

so, 2( 3x+X)=40

2(4x)=40

8x=40

X=5

Therefore , breadth of the rectangle=5cm

and length of the rectangle=5(3)=15 cm.