Asked by Linnie
Early in his career, Andrew Ellicott Douglass (1867-1962) noticed a connection between climate and the growth of plants. Studying this connection, Douglass was able to develop the science of dendochronology, a method for dating events and climate variations by studying the growth rings of trees and ancient wood.
The concentric circles, or growth rings, represent the cross-section of a tree with a diameter of 16 centimeters. The width of the outer tree ring measures 2 centimeters. What is the area in square centimeters of the outer ring of the cross-section of the tree? Use 3.14 for .
The concentric circles, or growth rings, represent the cross-section of a tree with a diameter of 16 centimeters. The width of the outer tree ring measures 2 centimeters. What is the area in square centimeters of the outer ring of the cross-section of the tree? Use 3.14 for .
Answers
Answered by
bobpursley
The entire area of the tree is PI*16^2
The area inside the ring is PI*14^2
The difference is the area of the ring.
The area inside the ring is PI*14^2
The difference is the area of the ring.
Answered by
Marcos
114 cm.
Answered by
Adithya
area of outer circle A1=Pi*16^2= 803.84
area of inner circle A2=Pi*14^2= 615.44
area of outer ring=A1-A2=188.4 cm
area of inner circle A2=Pi*14^2= 615.44
area of outer ring=A1-A2=188.4 cm
Answered by
Cat
87.92 cm2 =D
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