Welcome to your Area and Perimeter of Plane Shapes(Study by Topics Junior Class) NAME EMAIL PHONE NUMBER 1. Calculate the perimeter of a semi-circle whose diameter is 14 cm.58 cm11 cm14 cm22 cm36 cm2. Find the radius of a circle having 154 cm² as its area.7 cm24.5 cm14 cm3.5 cm49 cm3. A square has a perimeter of 24 cm. Find its area in cm².36 cm²72 cm²48 cm²96 cm²24 cm²4. The area of a triangle ABC is 18 cm² and the base is 6 cm. Calculate the height of the triangle.2 cm6 cm18 cm9 cm4 cm5. In the isosceles trapezoid ABCD we know: AB||CD, |CD| = c = 8 cm, height h = 7 cm, |∠CAB| = 35°. Find the area of the trapezoid.31.53 cm²69.98 cm²47.54 cm²12.73 cm²6. An equilateral triangle of sides 16 cm has the same perimeter of a square. The area of the square in cm² is?64961442567. A rectangular garden has a length of 57 m and a width of 42 m. Calculate of how many m^{2} will decrease the area of a garden, if the ornamental fence with a width of 60 cm will be planted inside its perimeter.74 m²121 m²117.36 m²445 m²8. The diameter of a record player disc is 14 cm. Calculate its area.44 cm²154 cm²616 cm²144 cm²11 cm²9. The length of a board is twice its width. If its perimeter is 3.60 m, what is its width in cm?240 cm120 cm60 cm150 cm100 cm10. Calculate the area of the triangle drawn below.54 cm²20 cm²14 cm²25 cm²40 cm²11. Find the area of a square with side 7 cm.343 cm²10 cm²49 cm²35 cm²14 cm²12. Find the radius of a circle having 154 cm² as its area. (π = ^{22}/_{7})49 cm24.5 cm14 cm3.5 cm7 cm13. 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 m28 m16 m21.7 m14. Find the length of the diagonal of a rectangle whose length and breadth are 8 cm and 6 cm respectively.10 cm12 cm11 cm7 cm15 cm15. If the area of a rectangle is 144 cm² and its breadth is 6 cm, find the perimeter if the rectangle.12 cm144 cm60 cm24 cm30 cm16. Find the area of the rectangle ABCD, where the length of the side |AB| = a = 8.2 cm and the diagonal d = 2a.32.5 cm²98.5 cm²116.46 cm²29.2 cm²17. Three points, R, S, and T marked the edges of a garden plot. If |RS| = 5 m, |ST| = 13 m, and |RT| = 12 m, find the area of the garden plot.8 m²30 m²28 m²15 m²27 m²18. A right-angled isosceles triangle has the area of 32 cm^{2}. What is its perimeter ?22.1 cm12 cm27.31 cm35 cm19. The perimeter of a rectangle is 20 cm. If the breadth is 4 cm, find its area.24 cm²16 cm²40 cm²20 cm²18 cm²20. Find the perimeter and the area of a square, if we know the length of its diagonal d = 4.2 m.P = 15.3 m, A = 8.82 m²P = 11.88 m, A = 8.82 m²P = 18 m, A = 88 m²P = 6.3 m, A = 12.5 m²21 out of 20Time is Up!