Question

find the total surface area of the following 11.31?​

Answer 1

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