Question

Chapter - Perimeter and Area. WS
Q1. What are irregular figures?
Q2. Find the area of the triangle whose base is
14 cm and height is 20 cm?
Q3.The perimeter of a rectangular frame is 38
cm. Its breadth is 7 cm. What is the length of
the frame?
Q4. The perimeter of a rectangular photo is 24
cm. Its length is 8 cm. What is the breadth of​

Answer 1

Answer:

hinnnn............h

Answer 2

Answer:

ok.

Step-by-step explanation:

Answer1- An irregular figure is a figure that is not a standard geometric shape. Its area cannot be calculated using any of the standard area formulas. But some irregular figures are made up of two or more standard geometric shapes.

Answer2- A=140cm²

Answer3- Perimeter of rectangle=38 2(l+b)=38 2(12+b)=38 24+2b=38 2b=38-24 2b=14 b=14/2 b=7 cm. So breadth is equal to 7cm.

Answer4- perimeter of rectangle =2× (Length+breadth)----(1)

Given that ,

Breadth of rectangle = 4 cm.

Perimeter of rectangle =24 cm.

Let length of rectangle = y cm.

putting the values of perimeter and Breadth in (1)

24=×(y+4)

⇒24=2y+8

⇒2y=24−8

⇒2y=16

⇒y=16/2

⇒y=8.

Therefore, the length of side rectangle is 8 cm.

solution.