Find the area of the given figure if ABCD is a rectangle with sides 10 cm and 30 cm and the other

August 2023 1 2 Report

. Find the area of the given figure if ABCD is a rectangle with sides 10 cm and 30 cm and the other parts are all semicircles. [Use n = 3.14]

Answer:

441.42 m2

Step-by-step explanation:

Area of upper semi circle= πd ÷2 { half since it is a semi circle }

= 22 × 30 m

= 22 × 5 m ÷ 2

= 110 m ÷ 2

= 55 m

Since, the diameters of upper semicircle and lower semi circle is same

Area of upper and lower semicircle = 55×2 m² = 110 m²

Similarly ,

Area of right and left Circle ( together) = πd

= 22 × 10 m²

= 31.42 m²

Area of rectangle = l × b = 30 × 10 = 300 m²

Area of the whole figure = 110 m² + 31.42 m² + 300 m²

= 441.42 m²