Una tarjeta de felicitación se compone de tres semicírcunferencias. O es el centro de la gran semicircunferencia. Sarah quiere decorar toda la distancia alrededor de la tarjeta con una cinta. ¿Cuánta cinta necesita Sarah? Redondea tu respuesta al cm más cercano.

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it

step-by-step explanation:

hihi so drawing these 2 triangles is fairly simple. all that's left is finding the height of each one. luckily, we have a side length and an angle, so there is a trig function we can use to solve for the height. the easiest one to use would be tangent, since we have 2/3 things needed to find and the third needed is what we are solving for. tan(73°) * 30 ~= 98.13 and tan(73°) * 35 ~= 114.45