Question

13. A playground measures 300 m by 170 m. Find the cost of planting grass on this at the
rate of rs. 80 per metre.
​

Answer 1

area of the playground =300m by 170m

or. 2

300×170=21000m

cost of planting grass per metre =rs.80

cost of planting grass 21000m =21000×80

= rs.16,80,000

Answer 2

$\huge \purple{ \underline{ \boxed{ \red{ \mathbb{ANSWER : }}}}}$

$\red{ \textsf{The cost of planting grass on the playground is \orange{Rs.4080000 .}}}$

$\huge \purple{ \underline{ \boxed{ \red{ \mathbb{EXPLANATION : }}}}}$

$\large\green{ \underline{ \underline{ \mathbb{GIVEN : }}}}$

$\orange{ \textsf{Length of playground = 300 m }}$

$\orange{ \textsf{Breadth of playground = 170 m }}$

$\orange{ \textsf{Cost of planting grass per m² = Rs.80}}$

$\large\green{ \underline{ \underline{ \mathbb{FORMULA \: USED : }}}}$

$\orange{ \textsf{Area of rectangle = Length x Breadth}}$

$\large\green{ \underline{ \underline{ \mathbb{SOLUTION : }}}}$

$\red{ \textsf{Area of playground = Length x Breadth}}$

$\red{ \textsf{Area of playground = 300 x 170}}$

$\red{ \sf{Area \: of \: playground = 51000 \: {m}^{2} }}$

$\red{ \textsf{Cost of planting grass per m² = Rs.80}}$

$\red{ \sf{Cost \: of \: planting \: grass \: 51000 \: m² = 51000 \times 80}}$

$\red{ \sf{Cost \: of \: planting \: grass \: 51000 \: m² = Rs. \: 4080000 }}$

$\large \green{ \underline{ \underline{ \mathbb{KNOW \: MORE : }}}}$

$\orange{\mathbb{AREA : }}$

The area is the measurement of space enclosed by a closed geometric figure .