Question

ase Study
Due to covid pandemic, Medical shop owner decided to arrange Glass panels frame top
himself from corona virus. He designed one plan and handed over to the worker. In this pl
attached rectangular Glass panel with Semi circular glass panal. He asked one semicircular he
one circular hole as shown in the following figure for the customers convenience.
F
G
E
Кі
28 cm
і А
С
D
H
14-56 cm
Here circular hole radius is 7 cm.
Semicircular hole radius is 7 cm
Write the solution of the following questions by observing the above diagram.
i) What is the area of a semi circular hole ABC ?
a) 77 cm
b) 88 cm?
c) 67 cm?
d) 97 cm
ii) What is the area of circular hole IJKL ?
a) 144 cm
b) 154 cm
c) 134 cm
d) 145 cm?
iii) What is the area of semicircular glass panel GFE ?
a) 1332 cm
b) 1232 cm
c) 1223 cm
d) 1323 cm
iv) What is the length of the Arc ABC?
a) 21 cm
b) 22 cm
c) 23 cm
d) 20 cm
V) How much area of glass is required to make this protection Glass frame.
b) 2965
c) 2569
d) 2956
a) 2659
​

Answer 1

Answer:

area of semi circle 1/2×πr²

1/2×22/7×7×7 = 77