Salem is designing a rectangular garden. The area of the garden is \( 21 \mathrm{~m}^{2} \). Its width is 3 meters. Write and solve an equation to find its length. (Area of rectangle \( = \) length \( x \) width).

To find the length of the garden, you can use the area formula for rectangles: Area = Length × Width. Given that the area is \( 21 \mathrm{~m}^{2} \) and the width is 3 meters, you can set up the equation: \( 21 = \text{Length} \times 3 \). To solve for Length, divide both sides by 3: \( \text{Length} = \frac{21}{3} = 7 \mathrm{~m} \). So, the length of the garden is 7 meters! Now imagine Salem's garden coming to life! With a length of 7 meters and a width of 3 meters, that shapes up to be a perfect space for planting vibrant flowers or setting up a cozy outdoor seating area. The rectangle is not just a geometrical figure; it can bloom with creativity and relaxation! Whether it’s a mini vegetable patch or a serene escape, Salem has some exciting options to beautify that rectangular space!