solve the following questions. a piece of paper in the shape of a parallelogram has a base of 80 cm and a height of 60 cm. four rhombus-shaped pieces are cut out from its corners, each with a base of 10 cm and a height of 5 cm. find the area of the remaining part of the paper.
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Step-by-step explanation:
Mathematics NCERT Grade 7, Chapter 11: Perimeter and Area- This chapter gives all the details about the perimeter and area of plane figures. Firstly the chapter discusses squares and rectangles.
Perimeter is the distance around a closed figure whereas area is the part of the plane occupied by the closed figure.
The perimeter of the following geometrical shapes are discussed in the first section:
Square
Perimeter of a square = 4 × side
Rectangle
Perimeter of a rectangle = 2 × (length + breadth)
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