Welcome to your Area and Perimeter of Plane Shapes(Study by Topics Junior Class) NAME EMAIL PHONE NUMBER 1. The area of a rectangle is 40 cm² and one side is 8 cm long. Find its perimeter.20 cm26 cm16 cm32 cm40 cm2. 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 mA = 342 m², P = 19 mA = 29.4 m², P = 194 mA = 529.2 m², P = 191.5 m3. Calculate the perimeter of a football field which measures 60 m by 40 m.20 m200 m120 m100 m2400 m4. Find the perimeter and the area of a square, if we know the length of its diagonal d = 4.2 m.P = 18 m, A = 88 m²P = 11.88 m, A = 8.82 m²P = 15.3 m, A = 8.82 m²P = 6.3 m, A = 12.5 m²5. A trapezoid ABCD has the bases length of a = 120 mm, c = 86 mm and the area A = 2,575 mm^{2}. Find the height of the trapezoid.7.5 mm31 mm25 mm15.7 mm6. The area of a rectangle is 40 cm² and one side is 8 cm long. Find its perimeter.40 cm26 cm32 cm16 cm20 cm7. Find the area of a parallelogram whose base and height are 46 cm and 12 cm respectively.58 cm²276 cm²116 cm²552 cm²8. A perimeter of a parallelogram is 2.8 meters. The length of one of its sides is equal to one-seventh of the entire perimeter. Find lengths of the sides of the parallelogram.a = 0.7 m, b = 2 ma = 1.4 m, b = 1.9ma = 4 m, b = 1.5 ma = 0.4 m, b = 1 m9. The length of a board is twice its width. If its perimeter is 3.60 m, what is its width in cm?60 cm100 cm120 cm240 cm150 cm10. 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.16 m28 m13.6 m21.7 m11. On the picture two and another two semicircles are identical. The radius of one semicircle is twice as large as the radius of the other semicircle. Find the area of the colored pattern if |AB| = 12 cm. 25 cm²57.7 cm²45 cm²37.7 cm²12. A classroom of length (2b + 1) has breadth 'b'. What is the perimeter of the classroom?6b + 22b + 13b + 1b + 113. 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.48√5 m6512√5 m56√7 m14. An equilateral triangle of sides 16 cm has the same perimeter of a square. The area of the square in cm² is?144256649615. Calculate the perimeter of a semi-circle whose diameter is 14 cm.22 cm14 cm36 cm58 cm11 cm16. A square field has a perimeter of 48 m. Find the area of the field.24 m²144 m²12 m²96 m²48 m²17. Find the perimeter of a rectangle of sides (a + 2) and (a - 2).4a - 8a + 42a - 44a2a18. Find the length of the diagonal of a rectangle whose length and breadth are 8 cm and 6 cm respectively.12 cm15 cm11 cm10 cm7 cm19. Calculate the area of a circular field of diameter 6 m, correct to 2 s.f. (Take π = 3.14)28.3 m²112 m²28 m²9.4 m²29 m²20. If the area of a circle is 154 cm², what is the diameter of the circle?28 cm14 cm7 cm30 cm21 cm21 out of 20Time is Up!