Planimetrics - practice for 12 year olds
Number of problems found: 807
- Tablecloth 81847
A square tablecloth measures 80 cm so that it protrudes 33 cm on the sides; calculate how big the tablecloth is. - Half-circles 81731
A skier skis down a black slope. He makes a total of 31 half-circles while going down the hill. The radius of one semicircle is 4m. What distance did he travel? - A soccer
A soccer field (football pitch) has a length of 101.8 m and a width of 69.8 m. Find the total area of the field in square meters (m2) and convert this measurement to square yards (yd2). Use the fact that 1 yard = 0.9144 m. Round your answer to the nearest - Area - simple
Find the area of the triangle. So, the base is 7 2/3 mi. The height is 7 mi. What is the Area? - Garden hose
Miguel wound a garden hose around a circular real. If the diameter of the real is 10 inches, how many inches of hose was wound on the first full turn of the real round the answer to the nearest whole inch use 3.14 for pi. - Calculate 81590
Calculate the central angle if r = 72 cm and the arc length is 12.4 cm. - A picture
A picture frame is 62 centimeters wide and 40 centimeters long. The frame is 4 centime thick on all sides. What is the area of the picture's display? - A trapezoid 4
A trapezoid has a height of 12 feet and base measurements of 15 feet and 10 feet. What is the area? - Process 81358
Teo went around the pool twice. He took 160 steps in the process. He took 25 steps along the length. How much area does the pool take up, and how long is Tro's stride? 0.5m? - The long
The long side of a rectangular frame is 2′9″, and the short side is 1′3″. What is the area of the frame in square feet? - A rectangular 10
A rectangular flower garden is 4 1/2 ft by 4 3/4 ft. Find the perimeter and area of the garden. - A park In a park, the breadth of a rectangular flower bed is 2.25m, and its length is four times its breadth. Find the area of the rectangle.
- Pizza diameter
If an 18-inch pizza costs $16.99 and is cut into 12 slices, what is the cost per square inch? - A stop
A stop sign is in the shape of an 8-sided polygon (regular octagon) in which each side is 12 1/2 in. What is the perimeter? - Rectangle 80701 One side of the rectangle has length a=9/5 cm, and the length of side b is 7/10 cm greater than the length of side a. Calculate the perimeter and area of the rectangle.
- A triangle 8
A triangle has a base of 9.2 feet and a height of 4.8 feet. What is the area of the triangle? - Three-fifths 80366
Calculate in cm the perimeter of a triangle with sides a, b, and c. If a is two-thirds of side b, c is three-fifths side b; b=15 cm. - The length 14
The length of the rectangle is 6cm, and the perimeter of the rectangle is 20 cm. Find the rectangle's breadth. Find the area of the rectangle. - A farmer 6
A farmer made a square chicken coop of 6 1/3m. Determine the perimeter of the chicken coop. (Recall: perimeter =add all sides) - The rectangle 4
The rectangle above has a length of 7x and a width of 3. The perimeter of the rectangle is represented by the algebraic expression 14x + 6. Find the perimeter of the rectangle when x = 2.
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