Question

please give me answer ​

Answer 1

a. circle

b. πr'²: πr²= 36:121

   r'²:r²= 36:121

   r':r= 6: 11 . ( ratio of the radii)

   2πr': 2πr= 6:11 . ( ratio of the circumference)

c.  Let " c" be the circumference and "d" be the diameter

 c= d+30

2πr= 2r +30

44/7 r=2r +30

44/7  r - 2r = 30

30/7  r = 30

r= 30×7/30

= 7cm

d. Let the base be b= h/4

area of parallelogram = 144

bh=144

h/4 ×h=144

h²/4=144

h²=144×4

h=$\sqrt{144 }$  ×$\sqrt{4}$

 = 12 × 2= 24 cm

b= 24/4= 6cm

e.  perimeter= 3+3+5+5 ( opposite sides of a parallelogram are equal)

                    = 6+ 10 = 16 cm