Question

The length, breadth and height of a cubiod is 30 cm, 25cm, 20 cm respectively. Its total surface area is

• A. $3800c{m}^2$
• B. $3700c{m}^2$
• C. $3600c{m}^2$
• D. $3900c{m}^2$

Answer 1

The correct option is B $3700c{m}^2$

The total surface area of cubiod is $=2(l\times b+b\times h+h\times l$)
$=2(30\times 25+25\times 20+20\times 30$)
$=2(750+500+600)$
$=2\times 1850$
$=3700c{m}^2$