Nina is making a quilt that measures 12 feet by 9 feet. Her patches are 0.3 feet by 0.3 feet. How many patches will she need to make her quilt?
O A 12
B. 14
OC. 42
Ο Ο
D. 120
O E 1200

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13

step-by-step explanation:

assume that you have 3 different side lengths.   apply the pythagorean theorem here:   square each of the two shortest sides; call them a and b, so that their squares are a² and b².   also square the longest side, calling the result c².

now, if a² + b² = c² is true, the triangle is a right triangle; otherwise it is not a right triangle.