Two marks exercise problems I — task. Mathematics State Board, Class 9.

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1. Find the total surface area and the lateral surface area of a cuboid whose dimensions are:

length

$=$

$20 \ cm$ , breadth

$=$

$15 \ cm$ and height

$=$

$8 \ cm$ .

Total surface area

$=$

$cm^2$

Lateral surface area

$=$

$cm^2$

2. The dimensions of a cuboidal box are

$6 \ m × 400 \ cm × 1.5 \ m$ . Find the cost of painting its entire outer surface at the rate of

$₹22$ per

$m^2$ .

Cost of painting the cuboidal box

$=$

$₹$

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4. Two marks exercise problems I