the formula to find the area of a triangle is πr^2, you are given the diameter which equals 2r. so split the diameter in half and plug your number in. π4^2
The width is 6cm And the length is two times + 3 of the width 6 X 2 + 3 = 15 Add all 4 sides for the perimeter 6+6+15+15=42 The the dimensions are a rectangle that is 6cm wide and 15cm tall
