Math, asked by ishitabhardwajk, 1 year ago

A rectangular box 40cm*20cm*20cm is to be made up of tin. what is the area if tin sheet required if the box is without a lid.

Answers

Answered by gtststyle
2

Answer:


Step-by-step explanation:

Length of box(l)=40cm

Breadth of box(b)=20 cm

Height of box(h)=20cm

Required area of box=Total surface

area of box-

area of one face

=6(lb+bh+hl)-(lb+bh+hl)

=5(lb+bh+hl)

=5(40*20+20*20+20*40)

=5(800+400+800)

=5(2000)

=10,000 sq. cm


So,area of tin required=10,000sq. cm


aahnapushpa15: Ur formula for tsa is wrong
Answered by aahnapushpa15
1

Answer:


Step-by-step explanation:

L=40

B=20

H=20

CSA=2(l+b)h

=2(40+20)*20

2*60*20

2400cm sq

Area of lid

L*b=40*20=800

Area of the tin required=csa+ area of lid is equal to 240 + 800 =3200cm sq

Answered by aahnapushpa15
2

Answer:


Step-by-step explanation:

L=40

B=20

H=20

CSA=2(l+b)h

=2(40+20)*20

2*60*20

2400cm sq

Area of lid

L*b=40*20=800

Area of the tin required=csa+ area of lid is equal to 240 + 800 =3200cm sq

Answered by aahnapushpa15
1

Answer:


Step-by-step explanation:

L=40

B=20

H=20

CSA=2(l+b)h

=2(40+20)*20

2*60*20

2400cm sq

Area of lid

L*b=40*20=800

Area of the tin required=csa+ area of lid is equal to 240 + 800 =3200cm sq

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