AREA PERIMETER

711 P4.AP.NK.23050825

Level 3
Jane painted a grey square on rectangle ABCD as shown. The length of BC is twice of EC. The length of AD is ¹₂ of AB. Find the area of the unpainted part of the rectangle ABCD.

4 m

Attempt

712 P4.AP.JM.17100284

Level 3
After a rectangular piece of paper was cut into 18 squares of sides 4 cm each, a piece of L-shaped strip of paper was left as shown. Given that the length of the rectangular piece of paper is 26 cm, what is the perimeter of the rectangular piece of paper before it was cut?

4 m

Attempt

Square Rectangle Tiling W Remainder

713 P6.AP.JC.22040804

TRY FOR FREE

Level 3 PSLE
The figure is made up of three rectangles. A straight line drawn across the rectangles, divides the figure into two parts: shaded and unshaded.

The perimeter of the shaed part is 8 cm longer than the perimeter of the unshaded part. What is the length of AB?
What is the area of the shaded part?

4 m

Attempt

Rectangle Rectilinear figure Triangle Composite figure perimeter Composite figure area More than or less than Units & parts Elimination

714 P4.AP.JM.17100281

Level 3
The figure is made up of identical rectangles. The length of the rectangle is twice of its breadth. The area of the figure is 256 cm². What is the perimeter of the figure?

4 m

Attempt

Square & square root Rectangle Rectilinear figure Times as many Units method

715 P4.AP.NK.23050838

Level 3
The figure, not drawn to scale, is made up of 3 squares, A, B and C. The length of one side of square A is twice the length of one side of square B. The length of one side of square B is twice the length of one side of square C. If the length of square B is 16 cm, find the area of the shaded parts of the figure.

4 m

Attempt

Length Square Overlapping area Times as many

716 P4.AP.NK.23050842

Level 3
Figure A is a rectangular piece of paper measuring 36 cm by 20 cm. James folded the paper along the dotted line to form Figure B. What is the area of the shaded part of the paper?

4 m

Attempt

Rectangle Triangle Overlapping area Folded figure

717 P6.AP.NK.21060409

Level 3 PSLE
In Figure 1, WXYZ is a rectangular piece of paper. After 4 identical triangles are cut out from the paper, the remaining paper is shown in Figure 2. The area of the remaining paper is 186 cm².

What is the area of each triangle that was cut out?
The perimeter of Figure 2 is 36 cm longer than the perimeter of Figure 1. What is the perimeter of each triangle?

5 m

Attempt

Rectangle Triangle More than or less than

718 P5.AP.NK.23022718

Level 3
The figure is made up of four small squares. Linda had painted part of one square white and the rest of the figure grey. The perimeter of the white part is 38 cm and the perimeter of the grey part is 72 cm. Find the area of one small square.

4 m

Attempt

Square Rectilinear figure Composite figure perimeter Units & parts Elimination

719 P6.AP.TL.17090842

Level 3
This figure is not drawn to scale. Wheel A and Wheel B are touching a vertical plastic sheet. The ratio of the radius of the small wheel A to the radius of the big wheel B is 2 : 5. The total radii of Wheel A and Wheel B is 196 cm. Both wheels are rolled out in opposite direction shown until they are 2660 cm apart. The two wheels need to make the same number of revolutions. How many revolutions does each wheel make assuming that each wheel must make a complete revolution? (Take π = ²²₇)

5 m

Attempt

Circumference Ratio to units Distance apart Equal stage Units method

720 P6.AP.NK.21060419

Level 3
The figure shows a rectangle with its corners cut out. Each of the 4 identical corners cut out is a quarter circle. The ratio of the length of the rectangle to its breadth is 13 : 5.