Ask Question
Ask
Sign up
Welcome to our site!

Kids Learning Together

Learning through Collaboration

Ask SEARCH GUIDE CHAT

Ratio (Pri-6)

/ Ratio Chongfu Primary School / Homework (2018)
gram below, not drawn to scale, shows a shaded triangle within a rectangle. The ratio of the length AB to the breadth of the rectangle is 1:3. Find the area of the unshaded part of the figure. 1813 27 cm 18 cm 2 A6(内 76 Ans:
Se

September 21, 2018
 
0
 
0
 
44
Answer 1 Comments 0

Your answer

Please login to post your answer
 
 
AB = 18 ÷ 3 = 6 cmArea of triangle = ( 6 × 18 ) ÷ 2 = 54 cm2Area of rectangle = 27 × 18 = 486 cm2Area of unshaded part = 486 - 54 = 432 cm2
0

Comments 2
Sep 22, 2018 03:16 AM
Area of triangle = half of the rectangle formed by the 2 dotted lines (can you see why?)
Sep 22, 2018 04:17 AM
same answer with mine but teacher marked wrong. Thank you for helping.
September 22, 2018
Swipe left to see similar questions.

Alert