Area of the shape - 7th grade (12y) - practice problems
Number of problems found: 343
- The floor
The floor in the gym has dimensions of 6 * 12m Parquets have a size of 30 * 20cm. Parquets are packed in packages of 50 pieces and one parquet package costs 150 CZK. How many packages will we need? How much will it cost?
- Peter's rectangle
Peter had a rectangle 2 cm wide and of unknown length. The line had a 2 cm rectangle whose length was equal to the perimeter of Peter's rectangle. When they put the rectangles together with their widths, they got a new rectangle with a circumference of 63
- A rectangular 5
A rectangular picture frame is made of wooden strips that are ¾ inch wide. The outside edge of the frame is 8 ¼ inches long and 6 ¾ inches wide. Can a rectangular picture that is 7 inches long and 5 ½ inches wide fit inside the frame? CLEARLY EXPLAIN your
- The formula
The formula for the area of a circle is (Pi x r x r) where r = measure of the radius and Pi = 3.14. What is the area of a circle whose radius measures 1 cm?
- Goat's pen
Savannah built a rectangular pen for her goat that was 20 yards long and 15 2/5 yards wide. What is the area of this pen?
- The ratio
The ratio of the lengths of the two circles is 5: 2. Find the ratio of a a) the radii of these circles b) the areas for these circles
- Circle segment
A quarter circle with radius 4 has the same content as a circle segment with radius 3. What is the magnitude of the center angle of the circle segment?
- ABS triangle
Point S is the center of the square ABCD. The ABS triangle has a content of 9 cm². What is the circumference of the square in cm?
- Rectangular lot
What is the area of a rectangular lot measures 12 3/4 meter long and 8 5/6 wide?
- Area of a room
Find the area of a room 9/7 m and 2/7 m.
- The length 8
The length of a rectangular field is x + 4 and its width is x + 2. what is the area of the field? Answer in polynomials expressions.
- A rectangle 8
A rectangle measuring 6 cm and 4 cm is enlarged by the ratio 3:1. What is the area of the enlarged rectangle?
The ornament consists of one square and four dark semicircles. The area of the square is 4 cm ^ 2. Find the area of one dark semicircle and round the result to hundreds.
Alexandra made a rectangular quilt the measured 3 1/4. 2 3/4 feet in width. What is the area of the quilt in square feet? Write an equation to solve.
- A rectangle 7
A rectangle that has been split into 24 parts, set in 4 rows of 6 pieces each. The parts in the top 3 rows have been shaded blue. The parts in the left 5 columns have been shaded purple. The first 5 parts in the top 3 rows are striped to show they are sha
The Parallelogram base is 24 cm and high 10 cm. How many are such tiles required to cover a floor of area 1080m²?
- A trapezoid 3
A trapezoid ABCD has the bases length of a = 120 mm, c = 86 mm and the area A = 2,575 mm². Find the height of the trapezoid.
- A rectangular 4
A rectangular garden has a length of 57 m and a width of 42 m. Calculate of how many m² will decrease the area of a garden, if the ornamental fence with a width of 60 cm will be planted inside its perimeter.
- Long and wide
What is the area of a rectangle that is 1 1/4 meters long and 3/4 of a meter wide
- A piece 3
A piece of rectangle cloth has an area of 2 4/5 meters. Its breadth is 1 1/5 meters what is the length of the cloth?
Examples of area of plane shapes. Examples for 7th grade (seventh).