iMath | Community

kritikka

Asked 5 years ago

SG Secondary 1 Add Math: Geometry and Trigonometry

How to solve this question

Replies 1

Peter

It's application of pythagoras theorem. Join the centers of the 2 smaller circles. You'll have a right angle triangle with base 6, hyp 6+r and height 12-r. Apply pythagoras and solve, r (radius of smaller circle) is 4. Apply circle formula on the 2 half circles 8pi+18pi=26pi

5 years ago

Dinglan

Asked 5 years ago

SG Primary 4 Measurement

Help with this 3 questions

Replies 3

Ikhlas Hashim

Length of A n B is 7 n 5 respectively. Find area of square.

5 years ago

Ikhlas Hashim

Qn 5 n 6 need to guess n check.

5 years ago

Ikhlas Hashim

Qn 7 find area of both big square n small square. To find how many small square can fit into the big square , area of big square/ area of small square.

5 years ago

Dinglan

Asked 5 years ago

SG Primary 4 Measurement

Help with these 3 questions

Replies 4

Ikhlas Hashim

Length n breadth of the paper just add 4 respectively then find area of rectangle.

5 years ago

Ikhlas Hashim

Length is still 16 but breadth add by 2. Then find area of rectangle

5 years ago

Ikhlas Hashim

It's a square paper meaning to say the original length n breadth is the same. Given its folded into half so 9+9=18cm is ur length and breadth. Then find the area of square

5 years ago