Find the ratio of : a) 20m 70cm : 30cm

20 cm:3 m=

3 m

20 cm

​

=

300

20

​

=

15

1

​

  [∵1 m=100 cm]

Step-by-step explanation:

firstly convert cm into meter like.

30cm = 0.30m

then put

0.30. upon 20 m

answer rather than having to add and subtract the measurements of the semi-circle, notice that the semicircle to the left of ad is actually identical in area to the blank semicircle-shaped space to the left of bc. so if we transferred the red semicircle into the blank space, we would end up with a square of side length 24 cm. the area of a square is s^2 = 24^2 = 676 cm^2.

u also answered this so i think u would know but i am here to

put in or use mine

0,0

step-by-step explanation: