Find the perimeter and area of rectangle 7cm length and 3 width

Question

Solve math problem

Answer 1

Hello Misha,

To find the area of a rectangle the formula is A=wl where A is equal to the area, w is equal to the width, and l is equal to the length. 

Therefore: 

A = 7 cm x 3 cm 

A = 21 squared cm 

To find the perimeter of a rectangle the formula is P = 2 (l x w) where P is equal to the perimeter, l is equal to the length and w is equal to the width. 

Therefore,

P = 2 (7 cm + 3 cm) 

Remember no matter what kind of equation, you must follow the BODMAS principle. 

B = brackets
O = powers
D = division
M = multiplication
A = addition 
S = subtraction 

Therefore, in your equation for the perimeter:

P = 2 (7 cm + 3 cm)  you will first do the work inside the brackets

P = 2 (10 cm) Then you will multiply

P = 20 cm  

I hope I have assisted and wish you a great weekend.