Planimetrics - practice for 12 year olds - page 19 of 49
Number of problems found: 961
- Circumference 9541
What is the area of the round flowerbed, whose circumference is 62.8 m? How many edges does it have? - Circumference 5647
The circumference of the isosceles triangle is 7.8 cm, and the base length is 34 cm. How long are his shoulders? - Calculate 3562
The 16 cm long string is 6 cm from the circle's center. Calculate the length of the circle. - Circumference 3088
In the parallelogram ABCD, the side AB is three times longer than the side BC. The circumference of the parallelogram is 20 cm. Find the lengths of the sides of the parallelogram.
- The area 2
The area of a rectangular piece of tablecloth is 3/4 m². Its width is 3/10 m. What is its length? - Main/central vertex
ABC is an isosceles triangle with base BC and central vertex A. The angle at vertex A is 18°. What will be the size of the angle at vertex B? - Trapezium bases
Find the trapezium height if a = 8 cm and c = 4 cm if its area is 21 square centimeters. - Grandmother and grandfather
Grandmother baked cakes. Grandfather ate half, then a quarter of the rest ate Peter, and Paul ate half of the rest. There left six cakes for parents. How many cakes were made by the grandmother? - Quadrilateral 45081
What is the perimeter of a quadrilateral whose first side is 3 cm longer than the second side, the third side is 5 cm shorter than the fourth side, and the second side is 2 cm shorter than the fourth side?
- Gamma angle
Find the magnitude of the gamma angle in triangle ABC if: α = 38° 56' and β = 47° 54'. - Parallelogram-shaped 17123
How wide is the parallelogram-shaped garden when its area is 1378 m2, and its longer side measures 53 m? - Calculate 12061
The area of the two circles is in a 4:9 ratio. The larger circle has a diameter of 18 cm. Calculate the radius of the smaller circle. - Circular 6760
What circular track radius must a runner run six times to run 1.8km? - Parallelogram 6288
Find the interior angles of the parallelogram if you know that one of them is 50 degrees larger than the other.
- Football 6056
The football field has an area of 75.75a. What is the width if its length is 101m? - 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. - The area
The area of a rhombus is 143 m². If the longer diagonal is 26 m, find the shorter diagonal in inches named d1. - Cross five
The figure in the picture is composed of the same squares and has an area of 45cm². What is its perimeter? - Parallelogram
The perimeter of the parallelogram is 190 cm. The length of one side is 1.3-times longer than the length of the shorter side. What is the length of the sides of a parallelogram?
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