# Area - 7th grade (12y) - math problems

#### Number of problems found: 393

• Area of a triangle
What is the area of a triangle that has the base 4 1/4 and the height of 3 3/3?
• Area of the cone
Calculate the surface area of the cone, you know the base diameter 25 cm and a height 40 cm.
• Perimeter of square
The square has a circumference 17cm. What is its area?
• Trapezium 2
Trapezium has an area of 24 square cms. How many different trapeziums can be formed ?
• Diameter
The diameter of a circular plot is 14 dm. Find the circumference and area.
• Swimming pool
A swimming pool 30 meters long is filled with water to a depth of 1 meter at the shallow end and 5 meters at the deep end and abcd the vertical area of the pool has the shape of a trapezium with the area given by S(abcd)= 1/2 (ab + cd) x ad. What is the a
• Surface area 6
Find the surface area of a prism whose bases are right triangles with sides of length 3, 4, and 5 inches and a height of 8 inches. Include a sketch
• Parallelogram ABCD
The area of parallelogram ABCD is 440 cm2. Points M and N are the midpoints of the sides AB and BC. What is the area of a quadrilateral MBND?
• Tereza
The cube has an area of base 256 mm2. Calculate the edge length, volume, and area of its surface.
• Circle - simple
Calculate the area of a circle in dm2, if its circumference is 31.4 cm.
• Square
Calculate area of the square with diagonal 64 cm.
• Circle simple
Circumference of a circle is 6.28. What is the area of the circle?
• Area of RT 2
Calculate the area of right triangle whose legs have a length 5.8 cm and 5.8 cm.
• Trapezoid ABCD v2
Trapezoid ABCD has length of bases in ratio 3:10. The area of riangle ACD is 825 dm2. What is the area of trapezoid ABCD?
• Hamster cage
Ryan keeps his hamster cage on his dresser. The area of the top of Ryan's dresser is 1 2\3 as large as the area of the bottom of his hamster cage. The area of the dresser top is 960 square inches. How many square inches of his dresser top are not covered
• Squaring the Circle
Calculating side of the square with the same area as the circle of radius 18.
• Cube 2
How many times will increase if the surface area of the cube if we triple length of its edge?
• Megapascals
What is the area of crosssection of the piston, if the force of 300 kN produces a pressure of 5 MPa?