Practice problems of the area
Number of problems found: 2292
- Rectangle 73
Suppose a rectangle has a height of 9 cm and a width of 4 cm. What is the rectangular area?
- The pilot
The pilot is on a mission with 160 liters of fuel. The distance between the main base and operation area is 2 hours. The distance between the main base and backup base is 1 hour. Assume: - Aircraft fuel consumption is 10 lt/h. - Minimum fuel after landing
- A cube
A cube has a surface area of 64 ft². Hedy creates a reduction of this cube using a scale factor of 0.5. What is the surface area of the reduction?
- Isosceles triangle
Find the area of an isosceles triangle whose leg is twice the base, b=1
- Trapezoid and bases
Find the area of the trapezoid whose bases differ by three and whose height is three less than twice the upper base.
- Square field
The perimeter of a square field is 64 m. Find the cost of cementing the field at the cost of 240 USD per square meter.
- Mr Ambayen
Mr Ambayen had 3 6/7 hectares of land. He planted 1/5 of it for coconut trees and 1/2 of it for avocado trees . What fraction of Mr Ambayens land was.planted with trees？
- A yard
Yevgen is fencing in a yard that is 30 meters longer than it is wide.The yard will have an area of 1000 m². Find its width and length.
- A Pile of salt
A Pile of salt has been stored in the shape of a cone. Mr. Terwilliker knows that the pile is 20 feet tall and 102 feet in circumference at the base. What is the area of the conical tarpulin (a large sheet of material) needed to cover the pile?
- Calculate 75014
The surface of a cube is equal to 294 square meters. Calculate the edge and volume of the cube.
- Length in yds
Find the area of a rectangle with a length of 4 3/4 yards and a width of 1 1/16 yards.
- A cuboid 2
A cuboid with a depth of 4 cm but a length and width of x cm is cut out from one corner of the original cuboid as shown (original cuboid has dimensions of 10x8x4 cm). The remaining shape has a volume of 199. Calculate the value of x.
- ABS, ARG, CONJ, RECIPROCAL
Let z=-√2-√2i where i2 = -1. Find |z|, arg(z), z* (where * indicates the complex conjugate) and (1/z). Where appropriate, write your answers in the form a + i b, where both a and b are real numbers. Indicate the positions of z, z* and (1/z) on an Argand d
- Z-score test
The weights of the fish in a certain lake are normally distributed with a mean of 11 lb and a standard deviation of 6. If 4 fish are randomly selected, what is the probability that the mean weight will be between 8.6 and 14.6 lb? Your answer should be a d
- Calculate 74674
Calculate a cube's surface area and edge if its volume is equal to 3375 cubic meters.
- A cone 2
A cone has slant height of 10 cm and a curved surface area of 50 pi cm square. Find the base radius of the cone.
- Solve 11
Solve. Round the length and width to the nearest half unit then solve for the area and perimeter. Enter your answers as whole numbers or decimals. Margo wants new carpet and a new wallpaper border for her bedroom. The room is 5.7 yards long and 6 6/7 yard
Rafael has three squares. The first square has a side length of 2 cm. The second square has a side length of 4 cm and its vertex is placed in the center of the first square. The last square has side length 6 cm and its vertex is placed in the center of th
- The length 11
The length of a rectangle is four times its width. If the area is 100 m², what is the length of the rectangle?
- The length 10
The length of a rectangle is increased to 2 times its original size and its width is increased to 3 times its original size. If the area of the new rectangle is equal to 1800 square meters, what is the area of the original rectangle?