Question

a square plote of side 80m A road 4m wide is made all around the plote inside it find the area of the road​

Answer 1

Answer:

area of road is 1216 sq mt

Step-by-step explanation:

length of square plot= 80 m

length of inside square= 80-4-4 m = 72 m

area of road

= area of square plot - area of inside square

= 80*80 m - 72*72 m

= 6400 m - 5184 m

= 1216 sq mt

Answer 2

Side of Plot = 80 cm

$\green{\bf Area \: of \: Plot = {a}^{2} } \\ \\ \Longrightarrow \: 80 \times 80 \\ \\ \Longrightarrow6400 \: {m}^{2}$

4m wide road made all-around the plot, So 8m side will be reduced

Side of new plot = 72 m

$\green{\bf Area \: of \: New \: Plot = {a}^{2} } \\ \\ \Longrightarrow 72 \times 72 \\ \\ \Longrightarrow5184 \: {m}^{2}$

$\bf Area \: of \: Road : \\ </p><p> \bf Area \: of \: Plot - Area \: of \: New \: Plot$

$\Longrightarrow6400 - 5184 = 1216 \: {m}^{2}$

$\boxed{ \blue{ \bf Area \: of \: Road = 1216 \: {m}^{2} }}$