Saw a 3m long cylindrical rod into three small cylinders, and the surface area increased by 24dm? The original sound volume of the stick 180 dm?
Formula: (24/4)x30 30 is obtained from 1m = 30m.
With 100kg wheat, 85kg flour can be ground. How many tons of flour can 80 tons of wheat be ground into? (Use proportional solution.
Set 80 tons of wheat grindable flour × tons. 85: 100 = x: 80 x = 68 68 tons of grindable flour.
There is an iron sheet. Cut off two equal circles to make the ground, and cut off a rectangle to make the side, just to make a cylinder. The radius of the bottom is 10cm. What is the volume of this cylinder? This problem lacks a rectangular condition.
Party A and Party B planned to produce 6,000 pieces per month, but actually Party A exceeded the plan by 30%, and Party B produced 480 pieces more than planned, so the actual production was 7,200 pieces. How many parts does Party B plan to produce?
(7200-6000-480)/30% = 720/30% = 2400 (pieces) 6000-2400=3600 (pieces) B plans to produce 3600 pieces.
The product of two internal terms of a ratio is110, where one is 4 and the other is 1/40.
The students arranged the venue for the party and made 25 red flags and 30 yellow flags. The yellow flag is 20% more than the red flag.
The planned investment for the construction of apartments for the elderly is180,000 yuan, and the actual investment is 3 million yuan more than planned. What is the actual investment ratio? (300+1800)/1800 = 2100/1800 =133.3% should be approximately equal to.
The difference between the number of art classes and calligraphy classes in schools is 3 1. The number of known calligraphy classes accounts for 22.5% of the number of art classes. How many people are there in the art class and calligraphy class? 31(1-22.5%) = 31/77.5% = 40 (person) 40+40-3 1=49 (person)