NATIONAL MATHEMATICS PROGRAM 20241021 Quarter 2 - Worksheet No.11 Note: Area of circle = nr? Circumference of circle = 2mr П approx value = 3.14 Radius r Complete the table below by solving measurements of circles and filling in the missing values. Use π =3.14. Radius Diameter Area 5cm 10 cm 78.5 cm² 12 m 24m 118069cm 2 Sin- 16 in 20389in 3 ft 6++ 4 cm 8 cm 7mm-- 14 mm 1130907 2816 cm 11344mm
Answer (1)
Answer:Let's complete the table using the provided formulas and π = 3.14. Radius (r) Diameter (d) Area (A) 5 cm 10 cm 78.5 cm² 12 m 24 m 452.16 m² 8 in 16 in 201.06 in² 3 ft 6 ft 28.26 ft² 4 cm 8 cm 50.24 cm² 7 mm 14 mm 153.86 mm² Calculations: - Diameter: d = 2r- Area: A = πr² Step-by-Step Examples: 1. Row 2 (12 m radius): - Diameter: d = 2 * 12 m = 24 m- Area: A = 3.14 * (12 m)² = 3.14 * 144 m² = 452.16 m²2. Row 5 (4 cm radius): - Diameter: d = 2 * 4 cm = 8 cm- Area: A = 3.14 * (4 cm)² = 3.14 * 16 cm² = 50.24 cm² Important Note: The given area value for a radius of 12m (118069cm²) is incorrect. The correct area is 452.16 m² as calculated above. Remember to be careful with units when calculating. The unit of area will be the square of the unit of radius.
