Question

(11) Surface area
soum
Example 2: Fill in the blanks
(i) Perimeter of a rectangle is
(ii) Surface area of four walls is
(iii) Area of a parallelogram is
(iv) Area of a semi circle is
(v) Area of a trap
ezium is
(vi) Area of a rhombus is​

Answer 1

Answer:

i P=2(l+w)

ii dont know

iii A=b*h

where

b= Base

h= Height

iv. (πr^2)/2

v.

A=((a+b)/2)h

a Base

b Base

h Height

A=(pq)/2

p= diagonal

q=diagonal

vi.

Answer 2

Answer:

Perimeter of rectangle= 2(l+b)

Surface area of four wall = 2(l+b)h

Area of parallelogram =base×height

Area of semi circle = πr²/2

Area of trapezium= 1/2(a+b)×h

Area of rhombus= 1/2×d¹×d²