Question

( brainliest and screenshot below) Hey! Can someone help?

Answer 1

Answer:

5 cm

Step-by-step explanation:

Area = length x width

40 = 8 x w

40/8 = w

5 = w

Answer 2

Question:

Rectangle A has area of 40cm² and length 8cm. The area of rectangle B is one-half the area of rectangle A. The rectangle have the same length. What is the width of rectangle B ?

Answer:

Given:

• Area of Rectangle B is half of the area of Rectangle A.

$\quad$$\quad$ $\quad$ $\quad$${\large{\rm{{ \frac{1}{2} \times 40{cm}^{2} = 20{cm}^{2}}}}}$

• Length of both the rectangles are same.

$\quad$

Rectangle A :-

• Length (l) = 8 cm
• Area (A) = 40cm²

Rectangle B :-

• Length (l) = 8cm
• Area (A) = 20cm²

Width :

$\quad$ $\quad$ ${ \large{ \sf {\frac{Area (A)}{Length (L)}}}} \longrightarrow \frac{{ \cancel{20}}^{5} }{{ \cancel{8}} ^{2}} = \frac{5}{2}$

Thus, Width of Rectangle B is 5/2 cm.

$\:$

$\:$

Check:

We know,

$\quad$ Area of Rectangle = length × breadth

➛ 8 × $\frac{5}{2}$

➛ ${\large{ \frac{40}{2}}}$

➛ ${\large{ \frac{ \cancel{40}^{20} }{ \cancel{2}^{1} }} = { \boxed{ \red{20}}}}$