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F.3 MATHS----求積法x2 (15分!急!)
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最佳解答:
6a)The height of cone Let h be the height of cone 2/3*TT*(4cm)^3=(TT*h*(4cm)^2)/3 h=0.0625cm The height is 0.125cm 6b)The surface area of the figure =4*TT*((4cm)^2)/2+TT*4cm*((4cm)^2+(0.125cm)^2)^0.5 =150.8cm^2(corr to 4 sig fig) The surface area is 150.8cm^2 7)The volume of all the ball =8*4/3*(1cm)^3*TT =32/3TTcm^3 The rise level of water Let h be the rise water 32/3TTcm^3=TT*(6cm)^2*h =0.2963cm(corr to 4 sig fig) The rise level of water is 0.2963cm
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F.3 MATHS----求積法x2 (15分!急!)
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噤下面個網址....(第6題,第7題) http://i86.photobucket.com/albums/k113/chy684959/DSCN2858.jpg 幫幫手啦!thx!最佳解答:
6a)The height of cone Let h be the height of cone 2/3*TT*(4cm)^3=(TT*h*(4cm)^2)/3 h=0.0625cm The height is 0.125cm 6b)The surface area of the figure =4*TT*((4cm)^2)/2+TT*4cm*((4cm)^2+(0.125cm)^2)^0.5 =150.8cm^2(corr to 4 sig fig) The surface area is 150.8cm^2 7)The volume of all the ball =8*4/3*(1cm)^3*TT =32/3TTcm^3 The rise level of water Let h be the rise water 32/3TTcm^3=TT*(6cm)^2*h =0.2963cm(corr to 4 sig fig) The rise level of water is 0.2963cm
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