Question

Mateo wants to make a poster measuring 90cm*61cm.He will need to tape together pieces of paper each measuring 30cm*21 cm .He wants to use as few pieces as possible .How many pieces does he need ? How long a ribbon will he need to make a border for the poster?​

Answer 1

Answer:

A poster measuring 20 cm * 16cm is pasted on a sheet of cardboard such that there is a margin of 3.5 cm along each side of the poster. Find

a) the total area of margin

b) the cost of cardboard used at the rate of ₹ 1.50 per sq cm

Step-by-step explanation:

The length of the cardboard is 20cm +3.5cm +3.5cm=27cm

The width of the cardboard is 16cm + 3.5cm + 3.5cm=23cm

a) Area of margin= area of cardboard - area of poster

=(27cm×23cm)-(20cm×16cm)

=621cm²-320cm²

=301cm²