CSS - PMS - CCE - PCS - Mathematics
Geometry
A figure has area 65 cm². Linear scale factor becomes 3. Find new area.
A. 585 cm²
B. 595 cm²
C. 605 cm²
D. 575 cm²
Correct Answer: A
Area scales by k²: 65×3²=585 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
A figure has area 60 cm². Linear scale factor becomes 2. Find new area.
A. 250 cm²
B. 230 cm²
C. 240 cm²
D. 260 cm²
Correct Answer: C
Area scales by k²: 60×2²=240 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
A figure has area 55 cm². Linear scale factor becomes 5. Find new area.
A. 1365 cm²
B. 1375 cm²
C. 1395 cm²
D. 1385 cm²
Correct Answer: B
Area scales by k²: 55×5²=1375 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
A figure has area 50 cm². Linear scale factor becomes 4. Find new area.
A. 810 cm²
B. 820 cm²
C. 790 cm²
D. 800 cm²
Correct Answer: D
Area scales by k²: 50×4²=800 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
A figure has area 45 cm². Linear scale factor becomes 3. Find new area.
A. 415 cm²
B. 425 cm²
C. 395 cm²
D. 405 cm²
Correct Answer: D
Area scales by k²: 45×3²=405 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
A figure has area 40 cm². Linear scale factor becomes 2. Find new area.
A. 180 cm²
B. 160 cm²
C. 170 cm²
D. 150 cm²
Correct Answer: B
Area scales by k²: 40×2²=160 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
A figure has area 35 cm². Linear scale factor becomes 5. Find new area.
A. 865 cm²
B. 895 cm²
C. 885 cm²
D. 875 cm²
Correct Answer: D
Area scales by k²: 35×5²=875 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
A figure has area 30 cm². Linear scale factor becomes 4. Find new area.
A. 480 cm²
B. 490 cm²
C. 470 cm²
D. 500 cm²
Correct Answer: A
Area scales by k²: 30×4²=480 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
A figure has area 25 cm². Linear scale factor becomes 3. Find new area.
A. 225 cm²
B. 235 cm²
C. 215 cm²
D. 245 cm²
Correct Answer: A
Area scales by k²: 25×3²=225 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
A figure has area 20 cm². Linear scale factor becomes 2. Find new area.
A. 100 cm²
B. 90 cm²
C. 80 cm²
D. 70 cm²
Correct Answer: C
Area scales by k²: 20×2²=80 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
Use Heron’s formula for triangle sides 20, 21, 29 cm. Find area.
A. 204 cm²
B. 216 cm²
C. 222 cm²
D. 210 cm²
Correct Answer: D
s=(20+21+29)/2. Area=√[s(s−a)(s−b)(s−c)]=210 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
Use Heron’s formula for triangle sides 8, 15, 17 cm. Find area.
A. 60 cm²
B. 54 cm²
C. 66 cm²
D. 72 cm²
Correct Answer: A
s=(8+15+17)/2. Area=√[s(s−a)(s−b)(s−c)]=60 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
Use Heron’s formula for triangle sides 10, 10, 12 cm. Find area.
A. 54 cm²
B. 48 cm²
C. 60 cm²
D. 42 cm²
Correct Answer: B
s=(10+10+12)/2. Area=√[s(s−a)(s−b)(s−c)]=48 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
Use Heron’s formula for triangle sides 6, 8, 10 cm. Find area.
A. 30 cm²
B. 24 cm²
C. 36 cm²
D. 18 cm²
Correct Answer: B
s=(6+8+10)/2. Area=√[s(s−a)(s−b)(s−c)]=24 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
Use Heron’s formula for triangle sides 9, 10, 17 cm. Find area.
A. 30 cm²
B. 42 cm²
C. 36 cm²
D. 48 cm²
Correct Answer: C
s=(9+10+17)/2. Area=√[s(s−a)(s−b)(s−c)]=36 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
Use Heron’s formula for triangle sides 13, 14, 15 cm. Find area.
A. 78 cm²
B. 96 cm²
C. 90 cm²
D. 84 cm²
Correct Answer: D
s=(13+14+15)/2. Area=√[s(s−a)(s−b)(s−c)]=84 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
Use Heron’s formula for triangle sides 7, 15, 20 cm. Find area.
A. 42 cm²
B. 54 cm²
C. 36 cm²
D. 48 cm²
Correct Answer: A
s=(7+15+20)/2. Area=√[s(s−a)(s−b)(s−c)]=42 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
Use Heron’s formula for triangle sides 5, 12, 13 cm. Find area.
A. 30 cm²
B. 42 cm²
C. 36 cm²
D. 24 cm²
Correct Answer: A
s=(5+12+13)/2. Area=√[s(s−a)(s−b)(s−c)]=30 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
Use Heron’s formula for triangle sides 5, 5, 6 cm. Find area.
A. 12 cm²
B. 18 cm²
C. 6 cm²
D. 24 cm²
Correct Answer: A
s=(5+5+6)/2. Area=√[s(s−a)(s−b)(s−c)]=12 cm².
CSS - PMS - CCE - PCS - Mathematics
Geometry
Use Heron’s formula for triangle sides 3, 4, 5 cm. Find area.
A. 18 cm²
B. 0 cm²
C. 6 cm²
D. 12 cm²
Correct Answer: C
s=(3+4+5)/2. Area=√[s(s−a)(s−b)(s−c)]=6 cm².