Juli wants to frame a photograph of length 40 CM and breadth 25 cm. Find the perimeter of the frame required for this purpose.
Answers
Answer:
perimeter of rectangle =2(l+b)
Step-by-step explanation:
p= 2×40+2×25
= 80+50
= 130 cm
it is the correct answer and hope it helps you
Answer:
A rectangular photo frame of size 30cm by 40cm has a photograph mounted at the center leaving a 5cm border all around .What is the area of the border?
Don’t let the year slowdown your scientific career!
Difference of two rectangles, one being an external rectangle and the other an internal.
Area of external rectangle = length*breadth = 40cm*30cm = 1200cm square
Area of internal rectangle:
length= 40cm - 2(5cm) = 30 cm
breadth = 30 cm - 2(5cm) = 20 cm
Area = length*breadth = 30cm*20cm = 600 cm square
Area of the border = Area of external rectangle - Area of internal rectangle
= 1200 cm square - 600 cm square
= 600 cm. square