plz answer correctly
Answers
Step-by-step explanation:
Diameter of upper semi circle = 21cm
2r = 21
r = 21/2 cm
Area of upper semi circle
= 1/2 * 22/7 * r^2
=1/2 * 22/7 * (21/2)^2
=173.25cm sq.
In trapezium PQRS - a = 21cm
b = 14cm
h(AB) = 16cm
Area of trapezium PQRS
=1/2 * (a+b) * h
=1/2 * (21+14) * 16
=1/2 * 35 * 16
=280cm sq.
Diameter of lower semi circle = 14cm
2r = 14
r = 14/2
r = 7cm
Area of lower semi circle
=1/2 * 22/7 * r^2
=1/2 * 22/7 * (7^2)
=1/2 * 22/7 * 49
=77cm sq.
Total Area of shaded portion
= Area of upper semi circle +
Area of trapezium PQRS +
Area of lower semi circle
=173.25 + 280 + 77
=530.25cm sq.
Answer:
Here is your correct answer....see these attachments.
