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| 1. |
From a solid cylinder whose height is 2.4 cm and diameter 1.4 cm, a conical cavity of the same height and same diameter is hollowed out. Find the total surface area of theremaining solid to the nearest cm2 Woooo... |
| Answer» URFACE of AREA = csa of cylinder + area of circle + csa of CONE slant HEIGHT = h Ka squire + r Ka square 214/10 + 07/10 SQURE 576/100 + 49/100 625 /100 root 25 / 10 Ka whole squre .25/10 2.5 .2 ×22/7 ×7/10 ×2.4 + 22/7 × 7/10×7/10 +22/7×7/10×25/10 common 22(2×24/10 +7/10+25/10 22(4.8/10 +0.7/10 +2.5/10 ) 22(8.0/10 ) 22×4/5 28/517.6 approximately | |