: Find the area of each circle, then choose the letter with thecorrect answer.. Created by jhanreymaglucot. Math

AREA OF A CIRCLEFORMULA IN FINDING THE AREA OF A CIRCLE1. GIVENr = 20mmSOLUTIONFINAL ANSWER 2. GIVEN d = 10cmSOLUTIONFINAL ANSWER 3. GIVEN r = 2mSOLUTIONFINAL ANSWER4. GIVENd = 12cmSOLUTIONFINAL ANSWERANSWERS#CarryonLearning rąwr ก₍⸍⸌̣ʷ̣̫⸍̣⸌₎ค

: Find the area of each circle, then choose the letter with thecorrect answer....

Questions

jhanreymaglucot @jhanreymaglucot

September 2022 1 1 Report

: Find the area of each circle, then choose the letter with the
correct answer.

Answers & Comments

ChubbyBunny04

AREA OF A CIRCLE

FORMULA IN FINDING THE AREA OF A CIRCLE

$A = \pi {r}^{2} \\ A = \frac{1}{4}\pi {d}^{2}$

1. GIVEN

r = 20mm

SOLUTION

$A = \pi {r}^{2} \\ A = (3.14) {(20mm)}^{2} \\ A = (3.14)(400 {cm}^{2} ) \\ A = 1256 \: {mm}^{2}$

FINAL ANSWER

$D. A = 1256 \: {mm}^{2}$

2. GIVEN

d = 10cm

SOLUTION

$A = \frac{1}{4} \pi {d}^{2} \\ A = \frac{1}{4} (3.14) {(10cm)}^{2} \\A = \frac{1}{4} (3.14)(100 {cm}^{2} ) \\ A = \frac{1}{4} (3.14 {cm}^{2} ) \\ A = 78.5 \: {cm}^{2}$

FINAL ANSWER

$D. \: A = 78.5 \: {cm}^{2}$

3. GIVEN

r = 2m

SOLUTION

$A = \pi {r}^{2} \\ A = (3.14) {(2m)}^{2} \\ A = (3.14)(4 {m}^{2} ) \\ A = 12.56 \: {m}^{2}$

FINAL ANSWER

$B. \: A = 12.56 \: {m}^{2}$

4. GIVEN

d = 12cm

SOLUTION

$A = \frac{1}{4} \pi {d}^{2} \\ A = \frac{1}{4}(3.14) {(12cm)}^{2} \\A = \frac{1}{4}(3.14)(144 {cm}^{2} ) \\ A = \frac{1}{4}(452.16 {cm}^{2} ) \\ A = 113.04 \: {cm}^{2}$