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Astro Turf

Astro Turf. Bob’s Prob. Bob the gardener had a circular garden and all he knew was that it had a radius of 2.8m. Bob had to line the edge garden with bricks that were 10cm wide and fill in the garden with astro turf. Lots And Lots Of Bricks.

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Astro Turf

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  1. Astro Turf

  2. Bob’s Prob • Bob the gardener had a circular garden and all he knew was that it had a radius of 2.8m. • Bob had to line the edge garden with bricks that were 10cm wide and fill in the garden with astro turf.

  3. Lots And Lots Of Bricks • First Bob had to find out what the circumference of the garden is.

  4. Lots And Lots Of Bricks • But all bob knows is that the radius of the garden is 2.8 meters. 2.8 m

  5. Lots And Lots Of Bricks • Bob being smart one, uses the formula Pi (r) 280cm x 2 x

  6. Lots And Lots Of Bricks • So Bob puts that formula into his calculator Pi 280 x 2 x 1 2 3 4 5 6 7 + 8 9 0 x / % ) - . ( = Pi abc

  7. Lots And Lots Of Bricks • Which equals 1759 1759 1 2 3 4 5 6 7 + 8 9 0 x / % ) - . ( = Pi abc

  8. Lots And Lots Of Bricks • Then he divides it by 10cm because that is how wide the bricks are. /10 1 2 3 4 5 6 7 + 8 9 0 x / % ) - . ( = Pi abc

  9. Lots And Lots Of Bricks • Which equals 175.9, and that is how many bricks Bob estimates he will need to edge the garden. 175.9 1 2 3 4 5 6 7 + 8 9 0 x / % ) - . ( = Pi abc

  10. Astro turf • Bob needs to find out how much astro turf he needs. He uses a method called the corner square method.

  11. Astro turf Bob finds the area by times the radius by the radius to create a square. 2.8m 2.8m

  12. Astro turf Then you times it by pi (3.14) 2.8m 2.8m

  13. Astro turf So Bob put in to his calculator, 2.8 x 2.8 x Pi 2.8 x 2.8 x pi 1 2 3 4 5 6 7 + 8 9 0 x / % ) - . ( = Pi abc

  14. Astro turf Which ends up equaling to 24.63 m2 which is how much astro turf Bob needs. 24.63 1 2 3 4 5 6 7 + 8 9 0 x / % ) - . ( = Pi abc

  15. Bob’s Prob is Fixed • So now Bob knows how much bricks and turf he needs to complete the garden. • 175 Brick and 24.63 m2 of turf

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