Question

Two concentric triangles with radius 8cm and 22cm . The difference between their circumference is.

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Answer 1

Answer:

88 cm

Step by step explanation:

Circumference = 2πr

Circumference of first concentric triangle=

2×22/7×8

= 44/7×8

=50.285714

Circumference of second concentric triangle=

2×22/7×22

= 44/7×22

=138.285714

Difference = 138.285714 -50.285714

=88

Hence difference between their circumference is 88.