Arc Length and Sector Area Calculate arc lengths

Arc Length and Sector Area Calculate arc lengths and angles. Calculate the areas of sectors If you have any questions regarding these resources or come across any errors, please contact helpful-report@pixl. org. uk

Key vocabulary Radius Diameter Circumference Arc Sector

Circumference / area recap Find the circumference and area of these circles. Give you answers correct to 3 significant figures r = 10 r=4 Note rounding here!

What’s different about arc length or area of sectors?

Arc length

Arc length - example Learn the formula: -

Arc length - practice Find the arc length of each of the following sectors to 1 decimal place. 1) 2) 5 cm o 3 cm 35 100 o 3) 5 cm 100 o 4)EXT – find the perimeter of the sector 125 o 2 cm

Area of a sector

Area of sector – example Learn the formula: -

Area of sector – practice Find the arc length of each of the following sectors to 1 decimal place. 1) 2) 5 cm o 3 cm 35 100 o 3) 5 cm 4) 100 o 125 o 2 cm

Problem solving and reasoning 3 m 220 o A lawn is a sector of a circle, the owner wants to re-seed the grass. Each bag of seed covers 3 m 2 and costs £ 5. 75. The owner has £ 35. Is this enough for all of the seed needed? Remember to have a sentence with your decision at the end.

Exam specimen questions

Exam specimen questions

Exam specimen questions

Exam specimen questions