19 Mary buys a pack of sugar paste to cover her cakes. The pack is in the shape of a cuboid measuring 5 cm by 8 cm by 9 cm. (a) She rolls out her sugar paste into a rectangular sheet of pastry of uniform thickness measuring 30 cm by 60 cm. Work out the thickness of this rectangular sheet.

19 Mary buys a pack of sugar paste to cover her cakes. The pack is in the shape of a cuboid measuring 5 cm by 8 cm by 9 cm. (a) She rolls out her sugar paste into a rectangular sheet of pastry of uniform thickness measuring 30 cm by 60 cm. Work out the thickness of this rectangular sheet.

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

Chapter9: Surfaces And Solids

Section9.4: Polyhedrons And Spheres

Problem 23E: The surface of a soccer ball is composed of 12 regular pentagons and 20 regular hexagons. With each...

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19
Mary buys a pack of sugar paste to cover her cakes. The pack is in the shape of a
cuboid measuring 5 cm by 8 cm by 9 cm.
(a)
She rolls out her sugar paste into a rectangular sheet of pastry of uniform
thickness measuring 30 cm by 60 cm. Work out the thickness of this
rectangular sheet.
(b)
As shown in the diagram, Mary cuts out two circular pieces of pastry, each of
diameter 25 cm, from her rectangular sheet of pastry. What volume of pastry
remains when she removes these two circular pieces of pastry?
60 cm
25 cm
25 cm
Diagram not drawn to scale
30 cm

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