Question

a cow is tied with a rope is the centre of a circle of diameter 28cm Limited if the length of the Rope is 7 cm find the area of the zone which the cow can graze also find the remaining area of the lawn​

Answer 1

Step-by-step explanation:

Given: Diameter of circle = 28 cm

then radius = 28/2 = 14 cm

According to question, the cow with 7 cm rope can graze the area of circle with 7 cm radius.

Area of circle, a cow can graze

$= \pi {r}^{2} = \frac{22}{7} \times 7 \times 7$

= 154 sq. cm

The cow can graze in the area of 154 sq. cm

Remaining area of circle

Area of whole circle - 154

$= \pi {(14)}^{2} - 154$

$= \frac{22}{7} \times 14 \times 14 - 154$

= 616 - 154

= 462 sq. cm

Answer 2

Answer:

given, Diameter of the circle=28cm

Radius=28÷2 =14cm

Alc to question, the cow with 7 CM rope can graze the area of circle with 7cm radius.

Area of circle of the inner circle (a cow can graze)

= πrsq =22÷7×7

= 154 CM sq

the cow can graze in the circle of 154 CM sq

Area of whole circle - remaining area of circle

= π(14) sq - 154

= 616 - 154

=462 CM sq