Question

please tell me please​

Answer 1

Perimeter

let we name the sides (see in image)

Side EF = 30mm + 50mm = 80 mm

We know that perimeter of any figure is equal to sum of all sides of the figure

so,

perimeter = 30 mm + 50 mm + 30 mm + 80 mm + 60 mm

=== perimeter = 250 mm

Area

if we remove upper part we will obtain a rectangle

so,

area of rectangle = Length × Breadth

= 80mm × 30mm = 2400mm²

And we will also obtain a square if we will remove the upper part

so,

area of square = side² = 30mm² = 900mm²

Area of the figure = 2400mm² + 900mm² = 3300mm²