please answer que 5 for brainliest
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Area=20cm.×16cm.
= 320 sq.cm
CARDBOARD
Length is increased by 3.5cm.
length =20+3.5=23.5cm.
Breadth is also increased by 3.5 cm.
Breadth=16+3.5=19.5cm.
Area = 23.5× 19.5= 458.25 sq.cm
MARGIN
Area= (458.25 - 320)sq.cm
=138.25sq.cm
i. Area of margin = 138.25 sq.cm.
ii. A.T.O
Cost of cardboard per sq.cm = Rs.1.50
Cost of cardboard for 458.25 sq.cm = Rs.1.50 × 458.25 = Rs.687.375
Area=20cm.×16cm.
= 320 sq.cm
CARDBOARD
Length is increased by 3.5cm.
length =20+3.5=23.5cm.
Breadth is also increased by 3.5 cm.
Breadth=16+3.5=19.5cm.
Area = 23.5× 19.5= 458.25 sq.cm
MARGIN
Area= (458.25 - 320)sq.cm
=138.25sq.cm
i. Area of margin = 138.25 sq.cm.
ii. A.T.O
Cost of cardboard per sq.cm = Rs.1.50
Cost of cardboard for 458.25 sq.cm = Rs.1.50 × 458.25 = Rs.687.375
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