BlazingSciencist09 BlazingSciencist09

17-01-2021
Mathematics

contestada

Calculate the area of a sector of a circle that subtends an angle of 45° at the center of the circle, radius 14cm
a) 11cm² b) 77cm²
c) 25cm² d) 56cm²

Respuesta :

musiclover10045 musiclover10045

17-01-2021

Calculate the area of the full circle:

Area = PI x r^2

Area = 3.14 x 14^2 = 615.44 sq. cm

45 degrees is 1/8 of a circle, multiple the area of the circle by 1/8

615.44 x 1/8 = 76.93, round to 77 cm^2

The answer is B. 77 cm^2

Answer Link

Otras preguntas

Help!!!!!!!!!!!!!!!!!

Eye colour in certain cat species is determined by a gene with multiple alleles. Brown eyes (CW) are dominant to green eyes (C N ) which are dominant to grey ey

Which part of concentration camps forced prisoners to do physical work and subjected them to starvation and inhumane treatment?

What do you know to be true about the values of a and b? 60" 75" O A. a b O B. a = b O c. a> b O D. Can't be determined

Escribe cinco preguntas usando las palabras de tu vocabulario. (Complex questions) Vocabulario: El pueblo, El ritual, El sitio, La epoca, La herencia.

(3xy2x2y−3)2(9xy−3x3y2)−1.

Find the measure of Angle R if a = 9 square root 2 and b = 18 square root 2. Please help!!

What local beliefs (beliefs derived from the people) have given the state it's authority? (In the U.S.)

The length of the shadow of a pole on level ground increase 90m, when the angle of elevation of the sum changes from 58-38.calculate the height of the pole, cor

"Five thousand! That's about how many advertisements you are exposed to in one day if you live in a metropolitan area. Researchers' estimates of the actual numb