Question

1. If AB 12 cm BC 16 cm and AB is perpendicular to BC, then the radius of the circle passing
through the points A, B, and Cis:
(a) 6 cm
(b) 8 cm
(c) 10 cm
(d) 12 cm​

Answer 1

Answer:

radius is 10 cm

Step-by-step explanation:

given AB=12 and BC = 16

AB perpendicular to BC  then AC will be diameter of circle,because diameter of circle subtends right angle at circle

therefore by pythagorus theorem,

AC² = AB²+BC²

AC² = 12²+ 16²

AC² = 144 +256

AC =√400

AC = 20cm

now , we know

radius = diameter/2

radius =  20/2 = 10cm

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Answer 2

Answer:

if ab is perpendicular to bc

then

ab÷bc

ab point =4

divide

cis =4-1

solution

4÷12+4÷16-1

3+4-1

7-1

6

(A)