Q17 of 19 Page 191

If 1 kg of fertilizer covers an area of half square meter. Find the amount of fertilizer required by a farmer for his circular field whose radius is 14m.

Given:


1kg of fertilizer for 0.5 m2 area


Area of circle = πr2


So, the area of the given circle = 3.14 × 14 × 14


The Area of the given Circle = 615.752 m2


Therefore, amount of fertilizer required


More from this chapter

All 19 →
15

Find the distance covered by the wheel of a bus in 2000 rotations if the diameter of the wheel is 98 cm.

 16

How many cubes of side 2 cm can be packed in a cubical box with inner side equal to 4 cm?

 18

One side of a right-angled triangular scarf is 80 cm and its longest side is 1m. Find its cost at the rate of Rs 250 per m2.

 19

Madhu's flower garden is now a square. If she enlarges it by increasing the width 1 m and the length 3 m. The area will be 19 m2 more than the present area. What is the length of a side now?