Pls do this one urgently. This question is based on surface area and volumes class 10 cbse. 20cm long cylindrical pencils of 1 cm diameter are packed in a box. If 20 pencils are to be arranged in 2 rows find the surface area of the box
Answers
Answered by
1
Dimensions of the cyliderical pencil is,
Diameter = d = 1 cm
Length of the pencil = 20 cm
Given 20 pencils are arranged in a cubiodal box
in two rows,
Now dimensions of the cuboidal box is
Lenth = l = each pencil length = 20 cm
breadth = b = 10 × each pencil diameter = 10 × 1cm = 10cm
Height = h = 2 × each pencil diameter = 2 × 1 cm = 2 cm
Total surface area of the box = 2 ( lb + bh + lh )
= 2 ( 20 × 10 + 10 × 2 + 20 × 2 )
= 2 ( 200 + 20 + 40 )
= 2 × 260
= 520 square cm.
Diameter = d = 1 cm
Length of the pencil = 20 cm
Given 20 pencils are arranged in a cubiodal box
in two rows,
Now dimensions of the cuboidal box is
Lenth = l = each pencil length = 20 cm
breadth = b = 10 × each pencil diameter = 10 × 1cm = 10cm
Height = h = 2 × each pencil diameter = 2 × 1 cm = 2 cm
Total surface area of the box = 2 ( lb + bh + lh )
= 2 ( 20 × 10 + 10 × 2 + 20 × 2 )
= 2 ( 200 + 20 + 40 )
= 2 × 260
= 520 square cm.
abc120454:
hope this helps you
plz mark it as brainliest and say thnx also
Tyx so much for ur help
Similar questions