Everything Maths Grade 10

a)

12 cm

20 cm

b)ABCDis a square,AC=12 cm,AP=10 cm.

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J

27.The prism alongside has the following dimensions:

AB= 4units,EC= 8units,AF= 10units.BCis an arc of a circle with centreD.AB∥EC.

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"

6

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C

a)Explain whyBD, the radius of the arcBC, is 4 units.

b)Calculate the area of the shaded surface.

c)Find the volume of the prism.

28.A cooldrink container is made in the shape of a pyramid with an isosceles triangular base. This is known
as a tetrahedron. The angle of elevation of the top of the container is 33,557◦.CI=7 cm;JI=18 cm.

Chapter 13. Measurements 465