contestada

A rectangle has a length of 10 cm and a perimeter of 46 cm.

Which equation could be used to find the width of the rectangle?


A.
2w + 10 = 46

B.
2w + 20 = 46

C.
10w = 46

D.
w + 10 = 46
Brainliest answer!!!!!

Respuesta :

makaylawhoo
b. since there are two sides that are 10, that equals 20. the other two sides are unknown, making the width 2w
teagirl4500
The equation for finding a perimeter is 2w+2ł=P. You have one side of the rectangle, the length is 10cm. To be able to put it into the equation, you have to double the length, which is 20 cm. You don't have the width, so it would just stay 2w. The ending equation is 2w+20=46. So your answer would be B. Hope that helps :)