Math Problem Statement

Di tepi jalan raya kota X terdapat rambu lalu lintas berbentuk lingkaran dengan jari-jari berukuran 7 cm dan sudut pusatnya 90°. Maka berapa luas juringnya?

A. 36,5 cm

B. 37,5 cm

C. 38,5 cm

D. 39,5 cm

Solution

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Math Problem Analysis

Mathematical Concepts

Circle
Arc length
Central angle

Formulas

Area of a sector formula
Conversion of degrees to radians
Pi value

Theorems

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Suitable Grade Level

High School