 
<translate> Tsawon ƙaramin murabba'i mai dari shine 1 / 2 * 40 = mita 20. Faɗin ƙaramin murabba'i mai faɗi shine 1 / 2 * 20 = mita 10. Tunda an sami yankin murabba'i mai kusurwa ta hanyar ninka tsawon da nisa, jimlar yankin ƙaramin murabba'i mai kusurwa shine 20 * 10 = mita murabba'i 200. Amsar ita ce 200. <eng> The length of the smaller rectangle is 1 / 2 * 40 = 20 meters. The width of the smaller rectangle is 1 / 2 * 20 = 10 meters. Since the area of a rectangle is found by multiplying the length times the width, the total area of the smaller rectangle is 20 * 10 = 200 meters square. So the answer is 200. 