29. Shalini has to cut out circles of diameter 1- cm from an aluminium

1.	29. Shalini has to cut out circles of diameter 1- cm from an aluminium strip of dimensions 8 cmem. How many full circles can Shalini cut? Also calculate the wastage of the alumintumby 1strip.
Answer» Circle diameter = 1 1/4 cmAluminum strip = 8 3/4 cm by 1 1/4 cm Area of Aluminum strip = 35/4 cm * 5/4 cm = 355 / 44 = 175/16 cm² Area of circle = 3.14 * (5/4cm)² = 3.14 * 25/16 cm² = 78.5/16 cm² 175/16 cm²÷ 78.5/16 cm² = 175/16 * 16/78.5 = 175/78.5 = 2 18/78.5 Shalini can cut 2 full circles. ye question konse book ka he

29. Shalini has to cut out circles of diameter 1- cm from an aluminium strip of dimensions 8 cmem. How many full circles can Shalini cut? Also calculate the wastage of the alumintumby 1strip.

Answer»

Circle diameter = 1 1/4 cmAluminum strip = 8 3/4 cm by 1 1/4 cm

Area of Aluminum strip = 35/4 cm * 5/4 cm = 35*5 / 4*4 = 175/16 cm²

Area of circle = 3.14 * (5/4cm)² = 3.14 * 25/16 cm² = 78.5/16 cm²

175/16 cm²÷ 78.5/16 cm² = 175/16 * 16/78.5 = 175/78.5 = 2 18/78.5

Shalini can cut 2 full circles.

ye question konse book ka he