Question

1. Find the surface area of a cuboid whose

(iii) length = 7 dm, breadth = 5 dm, height = 25 cm
(iv) length = 3.2 m, breadth = 7 dm, height = 45 cm​

Answer 1

Answer:

1)Length = 7dm , breadth = 5 dm , height = 25cm = 2.5dm

Surface area of cuboid = 2 ( lb+bh+hl )

2 ( 7×5+5×2.5+2.5×7 )

2( 35+5+17.5 )

2 ( 57.5 )

115 sq.dm

2)length = 3.2 m = 320 cm, breadth = 7 dm=70cm height = 45 cm

Surface area of cuboid = 2 ( lb+bh+hl )

2( 320×70+70×45+45×320 )

2(39,950 )

79,900 sq.cm

Step-by-step explanation:

Hope it was helpful

Answer 2

Step-by-step explanation:

hope it helps you out

thanks:)