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A cylindrical steel with 6cm diameter and 50cm height at the bottom is forged into a cylindrical blank with 10cm diameter at the bottom. What is the height? (solved by equation)
Set the height to x cm
3.14 × 3 square × 50 = 3.14 × 5 square × x
9×50=25X
450÷25=X
X=18
If the cylindrical steel with a radius of 25cm and a length of 4cm is forged into a steel bar with a radius of 10cm, what is the length of the steel bar
The volume is constant after forging
25x25x3.14x4/（10x10x3.14）=25cm
The length of steel bar after forging is 25cm
A piece of colored paper is 12m long and 9m wide. How many circles with a radius of 1.5cm can be cut at most?
12
The full score of a 100 point paper is 4. How to calculate 95 points
95 / 25 = 3.8 points
How to calculate the score of a 100 point paper according to 150 points
Directly multiplied by 1.5, so it's 72x1.5 = 108
How can I improve my math and English? I always failed in the exam before. It's easy for me to get more than 110 points in the 150 point paper. How can I get more than 130 points
Read more books, recommend bookworm and bedside lamp
Do more math problems and get a good one
My daughter got 100 points in the final English test. How to sign parents' opinions on the test paper
Although the full score, but also continue to work hard, a success only represents a full return
College English Band 4 results, how many points are more excellent?
550 or above, you can take the oral test, and then you will have the oral certificate. It should be considered as excellent. But if you plan to take CET-6 or CET-4 in the future, it's really not important. You'd better take the oral test
60 out of the full score, if I test 51 points, calculate to 100 points is how much?
85, excellent
Man's life starts from a small space______ Development begins. The information in it is generated by______ It's handed down. It's called______ Its carrier is a kind of______ The chromosome is made up of______ And______ The number of normal biological chromosomes is______ Yes. More or less can be very serious______ ．
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