find the total surface area of the following 11.31?
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Step-by-step explanation:
(I) Total surface Area =2(h×l+b×h+b×l)=2(lb+bh+hl)
=2(6×4+4×2+6×2)=2(24+8+12)=88cm².
(ii)Total surface area =2(h×l+b×h+b×l)=2(lb+bh+hl)
2(4×4+4×10+10×4)=2(16+40+40)
=2(96)=192 cm²
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