Question

A rectangular piece of plastic sheet measure 1 m by 70 cm find it quotes at the rate of rupees 80 per square metre​

Answer 1

Answer:

56 rupees is the cost.

Step-by-step explanation:

area of rectangle=l*b

=100 cm*70 cm

=7000 sq. cm

=0.7 sq. m

cost=0.7*80=56 rupees

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Answer 2

Formula :

Area of rectangle = Length x Breadth

Given:

Length = 1m
Breadth = 70 cm

Calculation:

Step 1: [convert cm to m ]
Breadth = 70/100 m = 0.7

Step2: Finding Area of rectangle

Area = 1 m x 0.70 m = 0.7 m^2

Step 3: Finding cost using unitary method

1 m^2 = Rs. 80
0.70 m^2 = Rs. (80 x 0.7) = Rs. 56