Question

Q.2 Find the diameter of a circle of radius 7.5cm.
Q.3 Find the radius if the diameter of a circle is 14.8cm.
Q.4 In a triangle ABC. <A= 50. <B=70. Find <C.
Q.5 In an isosceles triangle PQR. <P=<R=65 Find <Q.
Q.6 What is an acute angle? Draw one acute angle.
Q.7 See the figure, answer the following:
OA and OB are called
of the angle.​

Answer 1

Answer:

Hope this helps ^^

Step-by-step explanation:

1> diameter=2r=2x7.5=15cm

2> radius=diameter/2=14.8/2=7.4cm

3>ASP of a triangle=180 => a+b+c=180 => 50+70+c=180 =>180-120=c =>c=60

4> 65+65+q=180 =>130+q=180 =>q=180-130=50

5>An angle which is smaller than 90

Answer 2

Step-by-step explanation:

Q.2

ans.- radius = 7.5 cm

diameter = 2r = 15 cm

Q.3

ans.- diameter = 14.8 cm

radius = d/2 = 7.4 cm

Q.4

ans.- angle C = 180° - (angle A + angle B)

angle C = 180° - 120° = 60°

Q.5

ans.- angle Q = 180° - 130° = 50°

Q.6

ans.- Acute angle : The angle , which value is greater than 0 but less than 90 , is called Acute angle . as 45° , 30° , 60° , 15° , 22.5°