Question

Length, breadth and height of a cuboid are 13cm, 5cm and 2cm respectively. Find its (i) total surface area (ii) lateral surface area.

Answer 1

Answer:

Total surface area of cuboid = 2(lb+bh+hl)

putting the value of l, b and h in formula

Step-by-step explanation:

2(13*5+5*2+2*13)

2(65+10+26)

2*101

202 cm

Lateral surface area 2(l+b)h

putting the value l, b, h in Formula

2(13+5)2

2*18*2

72 cm

hopes this help marks as brainlist

Answer 2

$\red{\large {\underline{ \underline{ \star \: {Given}}}}}$

Length, breadth and height of a cuboid are 13cm, 5cm and 2cm respectively.

$\red{\large {\underline{ \underline{ \star \: { To \: \: Find}}}}}$

Find its (i) total surface area (ii) lateral surface area.

$\red{\large {\underline{ \underline{ \star \: {Solution}}}}}$

$t.s.a \: = 2(lb + bh + hl). \\ \\ \implies 2(13 \times 5 + 5 \times 2 + 2 \times 13). \\ \\ \implies2(65 + 10 + 26). \\ \\ \implies 2(101). \\ \\ \implies202\:Cm.$

II) Lateral Surface area (C.S.A)

$2(l + b) \times h \\ \\ \implies 2(13 + 5) \times 2 \\ \\ \implies 2(18)2 \\ \\ \implies 4(18). \\ \\ \implies 72\:Cm.$

Hence,

The T.S.A of Cuboid is 202 Cm.

and

C.S.A of Cuboid is 72 Cm.