Question

Sangeeta is creating a paper latern
that is 15
centimete long
13 cm wide and 28 cm high. The paper
she plans to use comes in sheets
the have an area of 14 square cm
and cost of rs 15 per sheet She buys
just enough paper to cover the sides
of the lantern. How much the paper
cost to her.
L ㄴ​

Answer 1

Answer:

surface area of lantern = 2*(15*13 + 13*28 + 28*15) =

                                      =  1958 sq.cm

if a sheet is 14 sq.cm, number of required sheets to cover the lantern = 1958/14 = 140

cost of covering of the lantern = 140*15 = Rs.2,100

HOPE IT HELPS YOU...................................

Answer 2

Answer

answer is 1680

Step by step explanation

Lateral area of a cuboid =2lh + 2 bh

=2(l + b)×h

=2(15+13)×28

=1568

Area of a sheet = 14 cm²

Total area = Lateral area of a cuboid ÷ Area of a sheet

=1568 ÷ 14 cm²

= 112 cm²

Cost of each 14 cm² sheet = ₹ 15

Cost of each 112 cm² sheet = ₹ 112 ×15

= ₹ 1680