Question

Question 6

(Image: Lesson Explainer: The Pythagorean Theorem in 3D | Nagwa)

What is the length of the diameter of the base of the cone?

a

56 cm

b

112 cm

c

139 cm

d

278 cm

Answer 1

Pythagoras theory- a(squared) = (square root) c2﹣b2

So
A^2 = (106 x 106)- (90 x 90)
A^2 = 11236 - 8100
A^2 = 3136
(Square root)
A= 56

Answer- A= 56cm