Question

hoose the correct option:
1
ifradius of circle is decreased by 10%, find the decrease in the area of the circle
(a) 10%
(b) 15%
(c) 19%
(d) 20%
2 What is the area of the biggest triangle inscribed in a semicircle with a radius of 5 cm?
(a) 12.5 cm
(b) 15 cm
(c) 19 cm
(d) 25 cm
3
If the sides of a square are increased by 10%, calculate increase in area of the square,
(a) 17%
(b) 20%
(c) 21%
(d) 25%
If the diagonals of two squares are in ratio 4:5 then find the ratio of their areas.
(a) 4:5
0 (6) 5:4
(c) 25:16
(d) 16:25
5 What will be the answer if we convert 0.96 km'into m??
(a) 9600 m2
(b) 960 m
(c) 0.96 m2
(d) 960000 m
6 If the area of circle is 112 m² then the circumference of the circle is
m
(a) 27.68 m2
(b) 37.68 m2
(c) 50.68 m2 (d) 55.68 m
7 If the diameter of a truck wheel is 0.65m and truck is travelling at 40km/h then the number of
revolutions per minute made by truck wheelis
(a) 3223
(b) 5223
(c) 6223
(d) 8500​

Answer 1

1=19

Step-by-step explanation:

2=12.5

3=25

4=5:4

5=9600m2

6=27.68m2

7=8500