Answer:
138
Step-by-step explanation:
152+125=277
277-135=142
around 138
The formula of the volume of a cylinder:

We have:

and

substitute:
Answer: The area of a base of the cylinder is equal 45 dm².
Answer:
ab=32
Step-by-step explanation:
ab:bc
4:3
abc= 56
4+3=7
56÷7=8
ab= 8x4=32
bc=8x3=24 #