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(a) calculate the area of given surfaces-
(i) area of triangle= 1/2xbxh
area = 1/2x8x10
area= 40cm^2
(ii) area of circle =πr^2 r= 3cm
area= 22/7 x 3 x 3
area = 28.274
(b) calculate volume of-
(i) volume of cuboid= l x b x h
volume = 10 x 5 x 15
volume = 750 cm^2
(ii) volume of sphere = 4/3πr3
volume = 4/3 x 22/7 x 4 x 4 x 4
volume = 268.082
(iii) volume of cylinder = πr^2h
volume= 22/7 x 8 x 8 x 35
volume = 7037.16
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