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4.
Solution : page 156
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22
Use =
7
(a) Calculate
...
M12
The diagram below, not drawn to scale, shows the cross section of a prism in the shape of a sector of
a circle, centre O, and radius 3.5 cm. The angle at the centre is 270°.
'В
(i) the length of the arc ABC
TEST 2
(ii) the perimeter of the sector OABC.
(iii) the area of the sector OABC.
(b) The prism is 20 cm long and is a solid made of tin. Calculate
(i) the volume of the prism
13.5 cm C
18.
(2 marks)
(2 marks)
(2 marks)
(2 marks)
(ii) the mass of the prism, to the nearest kg, given that 1 cm³ of tin has a mass of 7.3 kg.
(2 marks)
Sagot :
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