Answer:
23% decrease
Step-by-step explanation:
:)
Answer:
3 times 4
Step-by-step explanation:
3 groups of 4...............
Answer: The answer is 314.28 cm² (approx.).
Step-by-step explanation: Given that an engineer is going to install a new water pipe. The diameter of this circular pipe is, d = 20 cm.
We need to find the area 'A' of the circular cross-section of the pipe.
Given, diameter of the circular section is

So, the radius of the circular cross-section will be

Therefore, cross-sectional area of the pipe is

Thus, the answer is 314.28 cm² (approx.).
The answer is going to be x=22
36.
90 times 2/5 (or 0.4) is equal to 36