Answer:
A=50 cm
Step-by-step explanation:
For each of the shapes add the lengths of each side together. For the unknown sides, add the known to reach it EXP: for A you know that the base is = 7 cm+5 cm.
For B convert MM to CM. Add.
27 and 40
D
there are 9 digits.
and round it off to the nearest hundred million which is 3.
There are 8 digits before the 3... so 10 gets to the power of 8.___ 10⁸
3,0×10⁸ m.s^-1
c
Average between these no.s =
approx
