Maths practice for 12-year-olds - page 297 of 301
Examples and word math problems for 7th grade.Number of problems found: 6003
- 3-bracket 3
Two angles in a triangle are 90° and 60°. Has the triangle at least two equal sides? - 3-bracket
Maybe the largest angle in the triangle is less than 20°? - Diagonal
Can a rhombus have the same length, diagonal, and side? - Chord
The point on the circle is the endpoint of diameter and endpoint of the chord length of the radius. What angle between chord and diameter?
- Numeric question
Is it possible a negative, irrational number? - Aircraft
Flight length 3457 km took 5 hours. The airport passengers had to arrive hours in advance, 2 hours. Departure was delayed for 6.4 hours. The destination airport formalities took 0.4 hours. Calculate the average speed of passenger travel from arrival to le - Number
Is number 2.8814789 irrational? - Trunk
Calculate the length of the biggest fishing rod that can be inserted into the trunk of a car with dimensions 152 x 82 × 81 cm. - Box
Calculate the angle between box base 9 x 14 and body diagonal length 18.
- Observatory
The observatory dome has the shape of a hemisphere with a diameter d = 14 m. Calculate the surface. - Rotating cone II
Calculate the area of the surface of a rotating cone with base radius r=15 cm and height h=13 cm. - Rotating cone Calculate the volume of a rotating cone with base radius r=8 cm and height h=18 cm.
- Is right?
Is a triangle with sides 51, 56, and 77 right triangle? - Average
The average of 5 numbers is 108. What is its sum?
- Bulbs
In the box are 6 bulbs with power 75 W, 14 bulbs with power 40 W, and 15 with 60 W. Calculate the probability that a randomly selected bulb is: - Guess number
With what number should be divided, number 9727 to be reduced by 70%? - Secret number
Find the secret number n, which reversed decreases by 16.4 if the number increases by 16.4. - Clock
How long is the trajectory of the second hand of hours for day, if it is 15 mm long? - Earth parallel
Earth's radius is 6377 km long. Calculate the length parallel to latitude 75°.
Seedcake costs 44 cents. How many minimum seedcakes must we buy that we can pay in cash, only whole euros?Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
