Question

From a circular card sheet of radius 14 cm, two circles of radius 3.5 cm and a rectangle of length 3 cm and breadth 1 cm are removed. find the area of the remaining sheet. [Take PI AS 27/7




PLEASE SOMEONE ANSWER I WILL MARK YOU AS BRAINIEST. please, someone, help me

Answer 1

Answer:

u have written wrong value of pie =22/7.

ok ans is 535.79cm2.

Step-by-step explanation:

first find the area of the circle of radius 14cm that is 22/7×14×14=615.75cm2

then find the area of the 2 circles of radius 3.5cm that is 22/7×3.5×3.5×2=76.96cm2 then find area of rectangle that is 3×1=3cm2 so formula is area of 1st circle-(area of 2nd 2 circles +area of rectangle) = 615.75-(76.96+3)=535.79cm2

Answer 2

$\large{\bf{\green{\underline{\underline{AnsWer}}}}}$

✏Area of outer circle =$\pi {r}^{2} \\ = \frac{22}{7} \times 14 \times 14 \\ = 22 \times 28 = 616 cm²</p><p>⠀⠀⠀⠀</p><p>\\ \\ area \: of \: inner \: circle \: = 2 \times \pi {r}^{2} \\ \: = \: 2 \times \frac{22}{7} \times 35 \times 35 \\ = 22 \times 3.5 \\ = 77 {cm}^{2} \\ \\ </p><p>area \: of \: rectangle = \: l \times b \\ area</p><p> \: of \: whole \: circle \: -</p><p> \: ( \: area </p><p>\: of \: the</p><p> \: both \: circles \: </p><p>+ </p><p>\: area \: of</p><p> \: rectangle</p><p> \: ) \: = \: area </p><p>\: of</p><p> \: remaing \: sheet. \\ = 616 \: - \: ( \: 77 + 3) \\</p><p> = 616 - 80 = </p><p> {536cm}^{2} ....$