Welcome to your Area and Perimeter of Plane Shapes(Study by Topics Junior Class) NAME EMAIL PHONE NUMBER 1. A square has a perimeter of 24 cm. Find its area in cm². 36 cm² 48 cm² 24 cm² 72 cm² 96 cm² 2. A right-angled isosceles triangle has the area of 32 cm2. What is its perimeter ? 22.1 cm 35 cm 27.31 cm 12 cm 3. The perimeter of a rectangle is 20 cm. If the breadth is 4 cm, find its area. 18 cm² 40 cm² 16 cm² 20 cm² 24 cm² 4. Calculate the area of the triangle drawn below. 25 cm² 54 cm² 40 cm² 20 cm² 14 cm² 5. A land of a right-angled trapezoid shape has the bases lengths of 92 m and 76 m and the vertical arm is 6.3 m long. Find the land area and the length of a fencing needed to fence the land. A = 12.2 m², P = 91.5 m A = 29.4 m², P = 194 m A = 342 m², P = 19 m A = 529.2 m², P = 191.5 m 6. The diameter of a record player disc is 14 cm. Calculate its area. 11 cm² 44 cm² 154 cm² 144 cm² 616 cm² 7. The area of a rectangle is 40 cm² and one side is 8 cm long. Find its perimeter. 20 cm 32 cm 16 cm 26 cm 40 cm 8. Find the radius of a circle having 154 cm² as its area. 7 cm 3.5 cm 49 cm 24.5 cm 14 cm 9. Lengths of the sides of a rectangular garden are in the ratio 1 : 2. Line connecting the centers of the adjacent sides of the garden is 20 m long. Calculate the perimeter of the garden. 12√5 m 48√5 m 56√7 m 65 10. Two concentric circles have radii 2 cm and 3 cm respectively, calculate the ratio of their areas. 8 : 18 7 : 198 9 : 88 7 : 88 4 : 9 11. The length of a board is twice its width. If its perimeter is 3.60 m, what is its width in cm? 60 cm 150 cm 120 cm 240 cm 100 cm 12. A perimeter of an isosceles triangle is 474 m. The base of the triangle is by 48 m longer than the arm. Find the length of the sides and the area of the triangle. a = b = 142 m, c = 142 m, A = 2,026.44 m a = b = 142 m, c = 12.4 m, A = 16,026.44 m a = b = 112 m, c = 14 m, A = 15,026.44 m a = b = 142 m, c = 190 m, A = 10,026.44 m 13. Calculate to the nearest whole number the perimeter of a circle whose radius is 6cm. 39 cm 38 cm 36 cm 37 cm 14. How many tiles of dimension 0.3 m by 0.3 m will cover a floor area of 32.49 square meters? 355 tiles 361 tiles 366 tiles 400 tiles 350 tiles 15. One of the internal angles of the rhombus is 120° and the shorter diagonal is 3.4 meters long. Find the perimeter of the rhombus. 13.6 m 21.7 m 28 m 16 m 16. Calculate the area of a circle whose diameter is 7 cm. 44 cm² 22 cm² 154 cm² 38.5 cm² 38 cm² 17. Calculate the perimeter of a football field which measures 60 m by 40 m. 100 m 2400 m 20 m 200 m 120 m 18. The perimeter of a football field is 102 cm. Find the length of the field if its breadth is 24 cm. 27 cm 48 cm 63 cm 51 cm 12 cm 19. Find the radius of a circle having 154 cm² as its area. (π = 22/7) 24.5 cm 3.5 cm 14 cm 7 cm 49 cm 20. The area of a triangle ABC is 18 cm² and the base is 6 cm. Calculate the height of the triangle. 18 cm 6 cm 4 cm 2 cm 9 cm 1 out of 20 Time is Up! Time's up
